I’m assuming you’re on Windows (This is why we would like users to fill in the template information anyways, regardless of their questions).
Citra stores the save data in C:\Users\*insert your username*\AppData\Roaming\Citra
Citra stores it’s program data in C:\Users\*insert your username*\AppData\Local\Citra
if you want to uninstall Citra, you’ll want to delete the program data folder. You can get there easily by pressing the Windows Key + R and typing %localappdata%\citra into the run box:
Alternatively, you can use launch the maintenance tool in the program data folder and delete Citra that way: