If you primarily game using Steam then it’s easier than ever on most popular distros. Biggest hassle is likely still GPU drivers. I’ve never had any issues there but depending on what card you have you may be better off with either proprietary or FOSS drivers depending on what your distro of choice likes to provide by default. After that most games tend to just work, a handful may require you to pick a beta version of proton or something.
If you want to try it and don’t want to do a lot of tinkering check out PopOS. It’s probably the friendliest distro for gaming out of the box.