Heroic is my preference on my Steam Deck. I can easily get into it to install / uninstall any of my Epic/GOG games right to the non-Steam portion of the games library.
I liked Lutris when I used it on my old laptop, but it's a little more fiddly, I only use it rare games now that aren't covered by everything else (like last time I played WoW, Lutris ended up being the best way to install / launch it).