Even if the game is a repack, you can add the installer EXE to Steam and it’ll run with Proton Experimental or GE, choose the install location, then add the resulting, unpacked EXE to Steam and it’ll run just fine.

Happened to me nearly 40 years ago on my baby teeth. My mother finally had enough and took me for a second opinion and the next dentist found no problems. It’s given me 40 years of dental anxiety so bad that I have to go to a specialist that deals with it. The only time I had to have work done there, they drugged me to the gills.