I'd like to try the new Assassin's Creed and Avatar, but they're not on Steam - which is how I play almost every other game on Linux. I know I might be able to install Uplay games using Lutris, but I'm not sure if the experience is as smooth as Steam + Proton.

Do you have any experience with Ubisoft + Lutris? Is there an equivalent to ProtonDB to have an idea how well a game runs?