I'd suggest deleting proton experimental, it might have gotten corrupted and steam is choking on it for some reason. You should be able to delete it from Steam in game mode, or you can install Protonup-qt from the discover store and delete it that way.
For games there are also appmanifest files in the steam folders that steam uses to identify what's installed. If uninstalling proton experimental doesn't help, it may be that there's a corrupted manifest file (or something similar) for it that needs to be manually deleted. Without doing some digging on my own computer I couldn't tell you what the file name/location is, and I won't be able to check my PC until later today or tomorrow.
That's only feasible if you have a small family, once you have a couple kids and are buying $300 of groceries a week it's not at all feasible to transport that home by walking or using public transportation. Even less so if you're having to transport the kids at the same time. Just carrying in all the food from my driveway to my house takes 15+ minutes, and that's literally like 20 feet.