What graphics card do you have? How the distro handles GPU drivers is probably the most important aspect of game performance.
Usability wise, most distros are pretty similar with various degrees of hand holding. It's really just finding a desktop environment that works for you and what sort of update cycle you would prefer. Most of them will have Steam and Lutris available. Best avoid things like Debian Stable for gaming though. The software packages are soooo old. For game compatibility, check ProtonDB and Lutris.net.
I personally use Arch which I quite like. Although, the install and setup is somewhat... involved. Would not recommend to a beginner. Fedora would be my second choice. It's stable and up to date. I dual boot to Windows for the rare occasion when I need it. I have Windows installed on a seperate old SSD I had and switch between them using the UEFI boot menu. I am personally not a fan on installing them both on the same drive. I've never had good luck with it.