I have been playing FM 24 on the steamdeck and had no issues. I play it on my desktop too using the cloud save. Works great. Just make sure you give steam time to upload/download the save before and after playing.
I downloaded a community controller set up. Not sure how different it is to the default but it works great.
I actually prefer playing it on the deck.
The only downside is I purchased the deck 25 days ago. So was like 10 days outside of the returns period and missed out on the OLED 😞
That said, the screen is fine as it is.
Haven't really played any other games on it, although I imagine the likes of Hades will be brilliant on it