7 common SEO mistakes that are sinking your website (and how to avoid them)
I’ve spent years watching websites with potential fail to rank because of the same basic mistakes. I show you the 7 most common SEO mistakes and how to fix them once and for all.
Published · Updated · 11 min read
I’ve spent years watching websites that have potential, good content, interesting products… and yet they fail to rank. And when I sit down to analyze them, I always find the same mistakes.
They’re not complicated mistakes. I’m not talking about secret algorithms or magic formulas. I’m talking about basic SEO mistakes that are killing your visibility on Google and, worse, scaring away your potential customers.
The worst part is that many of these issues are easy to fix. You just need to know where to look. And in this article, I’m going to show you exactly what the 7 most common mistakes are and, most importantly, how to fix them once and for all. If you’re starting from scratch, begin with what SEO is and how it works.
Mistake #1: Not knowing what your user is looking for (and obsessing over a single keyword)
This is the rookie mistake par excellence. Creating content thinking about a single keyword and hammering it into the text.
The problem: Google isn’t stupid anymore. It has evolved a lot and understands context, synonyms and search intent. If you repeat «women’s running shoes» 47 times in one article, not only will you not rank better, but Google can interpret it as keyword stuffing and penalize you.
The solution: think about your user. What questions do they have? What problems do they want to solve? A modern content strategy is based on groups of (thematic) keywords and answering real search intent. Here’s how to identify search intent with AI Mode and how to choose keywords wisely.
Create content clusters. For example, if your main topic is «women’s running shoes», create articles around:
- «How to choose women’s running shoes for your gait»
- «Women’s running shoes for asphalt vs trail»
- «Women’s running shoes: size guide»
That way you don’t just cover a keyword — you build authority on a topic. And that, in the eyes of Google and AI, is worth gold.
Mistake #2: Publishing shallow content and expecting miracles
«I need to publish every day to rank.» Wrong. I’d rather you publish one excellent article a month than four mediocre ones a week.
The problem: shallow content adds no value. The user arrives, doesn’t find what they’re looking for, and leaves. Google detects it (look at bounce rate and time on page) and, automatically, your page loses positions.
In the AI era, this is even more critical. AI Overviews look for complete, deep, authoritative answers. If your content is a rehash of what’s already on 50 other blogs, the AI won’t choose you as a source. If you want to dive deeper, check out how AI Overviews work and their SEO impact.
The solution: create content that’s 10 times better than what already exists in your industry. Answer questions nobody else is answering. Add your personal experience, case studies, concrete data.
Ask yourself: what can the user find here that they can’t find elsewhere? If the answer is «nothing», you’re wasting your time and your money. And speaking of money (because SEO is an investment, not an expense), you’d benefit from knowing how to create an SEO content plan in 5 steps that actually works.
Mistake #3: Ignoring user experience (and Core Web Vitals)
You can have the best content in the world, but if your website is slow, if buttons don’t respond or if the page moves while the user tries to click, you’re dead.
The problem: Google has been clear since 2021: user experience is a ranking factor. And since March 2024, with the introduction of INP (Interaction to Next Paint), the bar has been raised.
If your website doesn’t meet Core Web Vitals (LCP, INP and CLS), you’re losing positions and, worse, giving off an amateur impression.
The solution: measure your website with tools like PageSpeed Insights or Google Search Console. Identify the issues and fix them. Here’s the complete guide to Core Web Vitals: what they are and how to improve them.
- LCP (loading speed): optimize images, use a CDN and improve server response time. Here’s how to improve LCP.
- INP (interactivity): split long JavaScript tasks and optimize third-party scripts. Here’s how to improve INP.
- CLS (visual stability): reserve space for images and ads. Here’s how to improve CLS.
It’s not complicated, but it requires attention. And trust me, it’s worth it. A fast website converts better and Google rewards it.
Mistake #4: Neglecting basic on-page elements
This is SEO 101, and yet I see it constantly. Pages with no meta title, no meta description, with a heading hierarchy that’s chaos…
The problem: on-page elements are the signals you give Google so it understands what your page is about. If you don’t take care of them, you’re letting the search engine guess. And Google doesn’t like to guess.
- A poorly optimized meta title reduces your CTR (click-through rate).
- A generic meta description doesn’t invite clicks.
- A badly designed H1-H6 heading structure confuses Google and AI.
The solution: dedicate time to optimizing each page.
- Meta title: include your main keyword at the beginning, keep it between 50-60 characters and make it attractive. Here’s how to optimize meta title and meta description.
- Meta description: 150-160 characters, with the keyword and a call to action.
- Heading hierarchy: one H1 per page, H2 for main topics, H3 for subtopics, etc. Don’t skip levels (from H2 to H4 without H3). Review this H1, H2 and H3 hierarchy guide.
It’s like labelling the shelves of a supermarket. If the labels are clear, the customer (Google) finds what they’re looking for quickly.
Mistake #5: Forgetting internal and external linking, or doing it wrong
Linking is the circulatory system of your website. If you don’t take care of it, content becomes isolated and loses strength.
The problem: many websites publish articles and abandon them, without linking to other content of their own. Or worse, they link to external pages without any criteria.
Internal linking helps to:
- Distribute authority (the famous PageRank «juice») across your pages.
- Improve user navigation, guiding them to relevant content.
- Help Google understand your website’s architecture.
The solution: create an internal linking strategy.
- Every new article should link to 2-3 other related articles on your website.
- Review old content and add links to new articles.
- Use descriptive anchor texts (the link text), not generic ones like «click here».
And for external linking, be selective. Link to reliable, authoritative sources. That tells Google your content is well documented. If you want to dive deeper, see this guide on Off-Page SEO and link building: strategies that work.
Mistake #6: Not building authority outside your website (Off-Page SEO)
This is the mistake that hurts most because it requires time and effort, and many people ignore it because «I don’t see immediate results».
The problem: On-Page SEO is necessary, but not enough. If nobody talks about you, if you don’t have quality links pointing to your website, Google won’t consider you an authority.
Off-Page SEO and Link Building are essential to prove to Google that your content deserves to be in the top positions. And also to convey E-E-A-T: experience, authority and trust on Google.
The solution: build authority strategically.
- Create linkable content: complete guides, case studies, original data. Things others want to cite.
- Reach out to other websites in your industry: write as a guest (guest posting) on relevant blogs.
- Take part in communities: forums, social media, podcasts… the more brand mentions, the better.
It’s not about buying links (that’s dangerous and Google penalizes it). It’s about earning them with valuable content and genuine relationships.
Mistake #7: Not measuring, not analyzing and not learning
«I do SEO, but I don’t know if it’s working.» That sentence makes my hair stand on end.
The problem: SEO without data is like driving with your eyes closed. You might get lucky and reach your destination, but you’ll most likely crash.
If you don’t measure, you don’t know what’s working. If you don’t analyze, you don’t understand what’s failing. If you don’t learn, you repeat the same mistakes over and over again.
The solution: implement a measurement and analysis system.
- Google Search Console: your best friend. It tells you which keywords bring traffic, what position you’re in, and whether there are technical errors.
- Google Analytics: to understand user behaviour on your website.
- Periodic SEO audits: review your website regularly to detect problems before they become a crisis. Here’s how to do a complete SEO audit in 7 steps.
It’s not about obsessing over numbers, but about using them to make better decisions. And if you need tools, here’s a list of free SEO tools in 2026.
Quick summary of the 7 mistakes and their solutions
| Mistake | Solutions |
|---|---|
| 1. Obsessing over a keyword | Work in topic clusters and answer search intent |
| 2. Shallow content | Create content 10 times better than your competition |
| 3. Ignoring Core Web Vitals | Optimize LCP, INP and CLS |
| 4. Neglecting On-Page | Impeccable meta title, meta description and H1-H6 hierarchy |
| 5. Poor linking | Create a quality internal and external linking strategy |
| 6. No Off-Page SEO | Build authority with link building and mentions |
| 7. Not measuring | Use data to make decisions and do regular audits |
The 7 mistakes we’ve seen are common, but that doesn’t make them any less serious. Each one of them is reducing your website’s visibility, driving away your customers and losing money you could be earning.
If you’d rather have a professional review your website, I can do a complete SEO audit, detect which of these 7 mistakes you’re making and give you a clear action plan. Tell me about your project and I’ll reply within 48 hours.
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