Where did the advice come from?
Free blog posts and YouTube tutorials, most of which were published between 2017 and 2019. They consistently recommended keyword density targets of 1.5% to 2%, exact-match anchor text on internal links, and keyword placement in the first sentence of every paragraph.
What happened when you followed that advice?
Eight pages that had been ranking on page two dropped to page four or lower after a core update. A review of those pages showed keyword density on some hitting 2.8%, with anchor text patterns that looked manipulative even to me once I saw them laid out.
Was there a cost to the fix?
The rewriting itself took me about 18 hours over two weeks. The larger cost was time lost, the site had been building momentum and the demotion stalled a product launch by roughly six weeks.
What would have been worth spending money on?
A single session with an experienced SEO consultant, which I eventually did for $180, clarified two years of conflicting free advice in about 90 minutes. The consultant pointed me to current Google documentation and explained entity-based relevance in practical terms.
The pattern worth avoiding
Free SEO content is often outdated by two or more algorithm cycles. Verify any tactical advice against the publication date before applying it to a live site.
Search rankings are not a destination. They shift with every algorithm update, every competitor's action, and every change in how people actually phrase their queries. Treating SEO as an ongoing discipline — not a completed task — is what separates sites that hold their ground from those that disappear from page one within a year.