I play all my GOG games on the Steam Deck. It takes only a very small amount of tweaking. Additionally, I add them as “non-steam games” in the library, update the artwork and icon, and have a very clean interface.
I play Minecraft on the Deck the same way.
On all non-steam games added to my library, I always do a quick internet search for “+ steam deck control” to help with the layout. It’s not perfect, but I find a lot of useful info for starters.
The cool thing about the Deck is that you can push the Steam key and update those controller settings on the fly.