Are you researching the behind the DLL hooks?
If you have tried every “steam fix new” solution and Steam still crashes on launch, you need a fresh install. But you don’t want to re-download 2TB of games. steam fix new
This is the most common error. It happens when you try to select a drive or folder that already has files in it. Steam requires a specific folder structure to designate a drive as a Steam Library. Are you researching the behind the DLL hooks