I heard Mint is really good but am not sure exactly which distro is best to use with Steam, as well as with newer games, as I primarily use my computer for gaming.
I generally play games like Final Fantasy XIV, Baldur's Gate 3, Elden Ring, Elder Scrolls Online, and Total War: Warhammer 3.
As long as you don't have an Nvidia card, choose whichever functional and complete distro (some people call these "beginner" distros).
MintLinux and Pop!OS are normally the two front-runners for new users. Basically, if you use Steam and you don't play online-only games with bad implementations of anti-cheat software, you are good to game on either.
Make a USB that you can "live boot" from, so you can test out how they work with your hardware before you actually install the OS. Generally speaking, Mint works better with AMD, and Pop! works better with Nvidia.
Nvidia drivers are largely reliable these days. I've daily driven AMD/Nvidia hybrid setups since ~2020 and have only occasionally had Nvidia driver issues. I've actually had more breakage in amdgpu due to insufficient testing and code churn - I think I've reported close to two dozen regressions over the last 4y.
Nvidia can be tough sometimes with linux, but not impossible. Seems like Linux Mint has a Driver Manager program that can install Nvidia's proprietary drivers for you. When you first install the OS, it'll just use the open source drivers, but those usually don't perform as well while gaming as Nvidia's own drivers, so you'll have to switch them after first boot.
protondb is a website that crowdsources how well specific Steam games work, and any workarounds that may be needed, if you'd like to check game compatibility. You can set it to show only reports from PC users, rather than PC and Steam Deck users.
AMD/Nvidia hybrid user here. I've had more breakage in the amdgpu driver than Nvidia by far. I think a more fair comment is "drivers break on Linux occasionally and it's a good idea to learn how to roll back package versions."