A thing to do: Look up how to install Nested Desktop into Gaming Mode (a quick YouTube video will show you how to set it up in about two minutes). In short, it allows you to access most of the functionality of Desktop Mode when you need those things, without actually having to officially switch over (think of it as Gaming Mode’s Desktop Mode Emulator).

Saves you bunches of time in the switching back and forth, as it’s almost instantaneous. I use it all the time, as stuff like web browsers also work better on the Desktop side.

As for casual games you can play for short bursts and put to sleep whenever… you already mentioned Balatro, that’s a great one. I love roguelikes and deck builders for this purpose in general. Recently, I’ve been playing a ton of Cobalt Core, I’d highly recommend as a great pick up and play and quick stop.