PC/Linux/Steam Noob here. I just got a game from GOG and I’m seeing tutorials mention Heroic, Lutris, and Wine via ProtonUp-QT as methods to get non-Steam games installed and running on Deck. Which method would you consider the easiest and most reliable for content from GOG, Ubisoft, Epic, etc…
I just use Lutris for everything since it integrates with all the storefronts I care about, but as others have brought up Heroic is also a good option. I’d say try a handful of games on each and see which you prefer.