This is a manifestation of obsessive-compulsive disorder. You should have obsessive-compulsive disorder. Don't pursue perfection too much. There is something, dust or black spots. It's good. Inside. I can't wipe it off anyway. Either stick this toughened film, don't touch it, it's inside, or take it off and put it on again, but maybe you accidentally put the dirty things in again, so be generous.