Our SEO app in Cloudflare uses Workers and has a free tier. No need for the $5 bucks fee. Our main use case is monitoring for SEO problems and patching them fast in Cloudflare https://www.cloudflare.com/apps/ranksense
I'm hoping my free SEO monitoring app in Cloudflare can at least help with the technical dirty work. It is powered by the Cloudflare Workers platform which allows for quick fixing from within the app https://www.cloudflare.com/apps/ranksense
It is a good exercise to simple open the new Google Search Console Index Coverage[1] report on any new modern website. You will often find important pages that don't get indexed for one reason or another.
Proper SEO indexing is a huge opportunity for most big sites. It doesn't happen magically on its own.