I apologize for the late reply, the other commenter is correct as well, Bazzite comes out of the box in desktop mode, if you’ve ever used plasma before, it’s a lot like that. For .exe programs I use wine, and haven’t had that let me down yet for the most part. Im fairly certain Bazzite does use flatpaks, but it does also have also Discover baked in.

Honestly, I compare it strongly to using the steam deck desktop mode.