Anyone can claim results on a website. What matters is whether those claims are specific, honest, and clearly separated between actual client work and personal projects — so you know exactly what you're looking at.
Below are real examples of work I've done, labeled clearly as either client projects or my own websites, with honest numbers and no exaggerated claims.
A full local SEO project covering Google Business Profile optimization, technical SEO fixes, and website structure — currently generating roughly 70–110 organic calls per month, separate from their Google Ads campaigns.
These are websites I own and run myself — used here as proof of ranking ability, not as client results. They're clearly my own experiments, built and grown without heavy reliance on backlinks.

A Brazilian recipe content site. Multiple pages have reached first-page rankings through content structure and search-intent-matched writing, not aggressive link building.

A local guide site that reached first-page rankings for its target content using the same content-first approach.

A beauty tools content site where I diagnosed and fixed a sitewide technical issue (a noindex setting silently blocking the entire site from Google) that had been preventing any content from ranking at all.
Client results depend on factors outside of pure SEO work — the business itself, its reputation, its market. Personal projects are useful proof of something different: that the strategies I use can take a site from zero visibility to real rankings on my own, without outside factors involved.
Both are useful. They're just not the same thing, and I don't want to blur that distinction the way some agencies do by presenting personal experiments as if they were client results, or vice versa.