I like everything, it's definitely most fun to switch between FPS, then some MOBA, then some singleplayer, ... Everything gets too boring after doing it nonstop!
I like a lot MOBAs, but also singleplayer stealth games like Shadow Tactics and some action-adventure.
But my favourite genre is 'autistic games', meaning games made with funny physics and/or stupid things.
Racing sims, idk why not change things stuff up (generally people have a tendency towards typical types of games which isnt bad but sim games can be unreated for how fun they r)