My home PC is on Linux Mint. Playing games on Linux is easy. Especially with Steam Proton that helps people run games on Linux easier than ever, the last major hurdle is anti-cheat which is on the dev's side for the most part. For the games I play 100% of it are either natively on Linux or runs through Proton just fine. https://www.protondb.com/ is a website you can check how compatible a game is and if there are any tweaks you can do to run stuff on Linux. There are some hiccups here and there but from my personal experience it's no more than when I was on Windows.
AFAIK gaming distros are mostly just comes with some stuff pre-installed. Nothing you can't install yourself. Mint made the transition from Windows to Linux very easy for me. I haven't touched Windows for my own PC for around 5 years now. Like the other comment said, even if you just give it a try running it off of a USB drive, just give it a try. Maybe like a weekend project.