Linux runs on literally anything. The hardware doesn't matter too much these days, but which distro you pick does. I would say to just load a flash drive with a live image of a distro you think looks cool and see how you like it on a trial basis. Try a couple of them before you reqlly make a decision and then load the full image
Nvidia cards can still be tricky, especially on optimus laptops. It's not nearly as problematic as it used to be, but I still run into occasional issues with it. If I ever buy a new computer for gaming, I'm going to go with AMD.
I don't mind telling the game to use a dedicated graphics card and I don't mind tinkering in general, but I want the graphics driver to work as expected. For example my Nvidia optimus setup doesn't always play nice with the external monitor and I'm currently dealing an issue where an nvidia specific setting is needed to get some games working, but that same setting causes issues in other games.