As the others have said, odds are you only need to flip the switch in steam to ignore OS. I've been overwhelmingly happy with how many games work this way.
To the point that I'm far more likely to find a game with clunky default controls on Steam Deck than I am one that won't play. And learning to use some of the more advanced control features of the system goes a long way to fixing that.
> And learning to use some of the more advanced control features of the system goes a long way to fixing that.
I need to take the time to do that some day. I’ve seen people swear Factorio was playable and fun on the deck, but the controls were just always too much of a struggle to get working in a way that worked for my brain.
I could play, but I just couldn’t get it smooth enough that the controls got out of my way.
I’d love (and hate) to have Factorio playable on the steam deck.
If it's been a while since you last tried it on the Deck, you might want to try again since recently they've added official controller support.
I had managed to get used to the Steam Input mappings so my experience may not reflect too much on you, but the official mappings are also pretty nice. IIRC they also show control hints underneath the map for context-sensitive actions, which help a lot too.
To the point that I'm far more likely to find a game with clunky default controls on Steam Deck than I am one that won't play. And learning to use some of the more advanced control features of the system goes a long way to fixing that.