Welcome! I made the leap not long ago as well. I’m using Linux Mint, and I’ve had a great experience with it (including gaming).
My recommendation: when you get to installing games, use something like Lutris or PlayOnLinux. These are frontends (like Steam) that will help manage any special configurations you might need. They can even connect to online sources and apply settings that have worked for other people. I’ve been using Lutris and it’s been pretty good (I’ve been playing a lot of BG3 lately, runs like a dream).