nostr:npub1rcfyuvd9t8ljxf2zvrsamgqdppd5auggp6mmx9hvhwrl7swnt0zsqstu72 I still use GOG all the time, because I am here for all the DRM-free goodness.
You can just use Proton with the GOG installers by running it through a launcher such as Heroic or Lutris. Supposedly Heroic works quite well for automatic updates and stuff, but I use Lutris.
I just hate Steam, if it isn't obvious.