I was similar, used Linux for work/programming but Windows for gaming. I refuse to update to Win 11 though, and with 10 going EOL I was faced with a problem. I’ve been using Steam Deck for about a year now with no problems so I figured I’d try going 100% Linux again. Ran my Library through protondb and nearly every single game was supported. I made the cutover about a month ago (just in time as well as literally a week before I made the switch copilot got stealth installed on my system).

So far I haven’t run into a single game that has failed or that I’ve even needed to change the options to get running. Now I don’t play LoL so I can’t speak to that specific game, and I have kept my Win 10 install if I do run into something that I can’t get running that I absolutely can’t live without, but so far I haven’t needed to boot into Windows since I made the switch. I think you might be surprised how few games won’t function in Linux these days.