Galaxy Maze

This is the first game I've ever made. I know it has a few bugs in it. I'm not entirely sure how to fix all of them so if you could help with suggestions on how to do that it would be much appreciated.  I would also love it if you had any cool ideas about the game's future, as in more levels. I think I'm going to be implementing a saved high-score future soon. Thank you for taking the time to read this and playing my game. All feedback is valued.