So with his own analytics, Cloudflare's server-side analytics, Cloudflare's Analytics script and Google Analytics he's got 4 different measurements now. And according to his follow-up article they all return different results.
Have you tried Microsoft Clarity?<p><a href="https://clarity.microsoft.com/" rel="nofollow">https://clarity.microsoft.com/</a>
If you are looking for something that is a bit more privacy friendly and not a feature overkill, check out Plausible.io (not affiliated, just a happy customer). There is also a self-hosted option.
Check out Darwin if you want something free, simple, yet super useful to work with. <a href="https://darwin.so" rel="nofollow">https://darwin.so</a>