You can game on just about any distro -- I'm using NixOS and it's great for many reasons, but also can be a real pain to learn and to solve new problems.

But if you're looking for the easiest to set up that will be most likely to just work and gaming is a priority, go for Bazzite.

I will second Fedora and Debian as extremely solid, well-supported distros, though both will require some initial setup (mostly enabling nonfree repos, especially for Nvidia gpus)