Posting to say thank you to all the helpful replies here. Just skimming I see so many good resource links and tips. I am about to do the same thing OP is doing since I decided Windows 10 is the last release I’ll be using as my main PC, for many of the same reasons as OP. I have some linux server experience but have never used it as my primary desktop PC. But I am too tired of the telemetry blocking game to keep putting up with Microsoft’s bullshit. I’ll have a Windows 11 partition for gaming with things that don’t work on linux, but Microsoft can kiss access to any of my non-videogame data goodbye.
It’s a sign of the times that so many helpful replies are here instead of 10-15 years ago where mostly you’d get “RTFM” responses. Thank you everyone for sharing your experiences.