The Procedure Entry Point Steaminternal-createinterface Could Not Be Located In The Dynamic Library |best| -

: The game expects a specific version of the Steam API, but a different (often older) version of the DLL is being loaded from the game's directory or the system path.

✅ Replace the DLL with a clean copy from: : The game expects a specific version of

This is rarer on Proton, but try:

Search your entire system for stray steam_api.dll files: : The game expects a specific version of