Get your shit in order, stop being part of the problem.
Most Linux distros allow you to "live boot" from your installation media. Its a working desktop, but it won't install anything before you very explicitly tell it to. A good way to see which interface style you prefer.
Just about any Desktop is just going to work fine. Laptops can be a touch more tricky, its not a terrible idea to google your laptop model + linux to see how others have faired before you leap ahead.
Yeah, its learning some new things. Its getting used to a new system. There may be troubles you need to solve. Its worth it for the privacy and freedom you are protecting by not running the Operating Systems of companies who SOLD YOU OUT!
Ubuntu (Easiest and most popular)
Ubuntu Mate (Like above, with a different interface. Some people like it more)
Fedora (Second most popular, not hard, but just a little "beardy"
OpenSUSE (Popular in Europe)
If you still want to do some gaming, I'd go with Ubuntu personally. Steam is right in the repos ("sudo apt install steam") and you are off to the races, at least, assuming those races have Linux support. A surprising number of games do. Its not the worst thing in the world to dual boot into Windows to play a few games now and then. Just remember to boot out of it before doing anything serious. Vote with your wallet in the future.