nobara is more focused on gaming and includes patches and software to play games without having to tinker a lot. you could use any distro but some games might have performance issues or require additional settings and configuration. nobara gets rid of maintaining that yourself, you might still have to tinker with a few things like launch options but not as in depth as other distros.

another popular distro is bazzite which does similar things, though i feel that's a bit more advanced to understand some concepts.

if your curious about switching i would recommend, if you can, to install a second hdd (can be cheap/small) and try one or both of them for a week to see what it's like and how well your games run. also if you don't like how one looks you can also try different desktop implementations. coming from windows, KDE will feel very familiar.