I am trying it out now! I like the layout / UI; reminds me of Boost and Joey which I liked a lot. One thing that bothers me is the colour scheme, though. In light mode it’s blue (?) and dark mode is more like some weird grey mode, and I’d prefer it to be a darker grey like in most apps (perhaps it could be more customisable so that people can change it to fit their preferences).
I’d recommend POP!_OS. Very easy to install and use and most games I’ve tried to play work without any problems.