Fedora with KDE. I ditched Windows about 4 years ago and never looked back. I bounced between a few different distros, but I’ve been using Fedora in recent months (switched once version 36 was released) and I think I’ll stick with it for a while. It’s been a great experience and gaming has been pretty painless so far, the only exceptions being games with easy anti-cheat as it doesn’t always play nice with Linux users.