How do I fix a Steam game that was uninstalled?

Quick Navigation :

1. Fix 1. Add a New Steam Library Folder.
2. Fix 2. Run the Game’s Executable File from Steam Folder.
3. Fix 3. Rename the ClientRegistry. blob File.
4. Fix 4. Edit the Broken Appmanifest Files.
5. User Comments.

Dec 31, 2019