Tried to delete the game from my USB where I downloaded it, but a part of the game just won't delete and I don't know why. I fear there may be a virus or something.
From what I know, Itch.io has automated virus scanning. I've also downloaded my game here multiple times for testing purposes. I've also scanned it multiple times; I've detected no threats. I'm no expert, but I think it's either getting flagged as suspicious by antivirus or your USB had a virus beforehand. Or a file from the game is open in Task Manager, which you need to close before deleting the game.