Very challenging controls indeed. It took me a while to realize that you can control the ball’s trajectory with the mouse, but I didn’t give up until I got the win, and I did!
You could improve the controls by making the player and the ball less likely to get stuck on walls, and perhaps making the ball a bit bouncier. Also, if you added easier levels at the start of the game, the player could get used to the rules and controls more gradually, instead of having to do everything in the first.
Regardless, it was a fun game. The music reminded me of SpongeBob, which felt very fitting for a rage game, lol. Well done!