You must extract this file into your Steam compatibility tools folder, usually located at ~/.steam/root/compatibilitytools.d/ . 2. The Recommended Way: ProtonUp-Qt
Look for the latest release and download the file ending in .tar.gz (e.g., GE-Proton10-34.tar.gz ).
Here is exactly where to download Proton GE and the best ways to install it on your system. 1. The Official Source (GitHub)