sound like a bad uninstall of that game that left files and registry entries.
Did you go to C:\Users\Andre\Appdata (hidden folder) \Local\Programs\Opera GX\68.0318206\Opera.exe and deleted that folder in Red?
What is weird is that normally most programs are located in AppData\Roaming and not AppData\Local.
After deleting that folder run a Registry cleaner or CCleaner Registry cleaner to eliminate any Registry entries for that game.
Restart your computer and see if Radeon Setting still shows that game running since you now have deleted the file & Folder that it was using.