LonelyNematocyst

Does it have to be Chrome, or just e.g. Chromium is fine?

There's stuff like Searxng or whoogle, but these aren't "real" search engines, merely "search aggregators" - they relay requests to a bunch of actual search engines, like bing or google, and aggregate the results. That's why they don't require tons of compute and scraping, and also why they often fail to work (since the search engines in question don't like or allow this). I believe it's not feasible to run a "real" search engine alone or even as a small group of people - according to this comment you need a powerful server with terabytes* of drive, hundreds of gigabytes of RAM and a lot of compute - and all of this will just let you crawl some top domains, nowhere near a good chunk of the internet.

*which sounds low actually, I would have expected more for this

After googling, I think that was a joke about an unrelated app.

Lutris doesn't, but you can do firejail --net=none lutris

I'd probably post quite a bit of content (music, etc) on a youtube alternative if I could expect it to not be copyright-striked. (and if anyone would watch it. The current PeerTube instances seem very barren.)

Or LibreTube, especially since Revanced needs Android 8+.