The rest you can find on itch.io or the builtin catalog.
I know this is a piracy community but these games are usually made by single devs or small studios, so buying them seems like a good choice if you can afford it. That’s also one of the reasons these games are not likely to be posted on torrent sites or similar sources.
Some people might argue it’s a different thing but for me individual YouTubers have replaced the role gaming magazines / websites took in the past. I follow a few who tend to enjoy the same games as I do. They usually do not release their videos right when the embargo is lifted but take a bit more time - which I enjoy.
That said, I could see how a fediverse focused gaming outlet might fill a niche. I don’t think anything like this exists yet and existing outlets barely have a presence here (or I didn’t notice, I haven’t exactly been looking for this).
If you wanna expand your site in the future, something like Kirby CMS might be great. It is paid but dev experience, community and loading speed of pages are much better that with something like Wordpress.