Imo. You shouldn’t worry about “which distro is best for gaming” since they are all the same under the hood (mostly). There are no real performance benefits with different distros, so just pick one that feels and looks the best for you. I’ve heard that PopOS seems to be quite friendly for newcomers so it should be a good place to start exploring.

A terminal is a terminal. If there is a feature you don’t know you need then you don’t need it. Run with whatever you have