Really good game! Having to press SPACE to shot and get back to the ball was a little difficult for the "goal" of the game (see what I made there haha), I would say to make the player to move freely and catch the ball when collide with it, then use the SPACE or mouse to shot but shooting the ball in the mouse direction to make it more responsive and easy to move around levels (the game has 7 levels and having to move around all of them with your movement system is a little overwhelming).
Other than that the game looks fun and the music is awesome!
Keep the good work!
Give my game a try if you have time:
https://whiteautumn-games.itch.io/idle-kickers