Ty for the feedback :)
Unfortunately, I lost some of the progress because of a pc crash :(, but I can see that the game lacks game felling. It's a problem that I'm having since the other jam of GMTK. It's hard to implement everything with little time to think about them.
I had so many ideas to the game, and even that some of them will never be implemented, I appreciate that you like it!
About the puzzles:
You can bounce the balls on walls or use the doors in your advantage to change the direction it's going. Also, try to have a fresh ball with the maximum time to travel much more space.
(SPOILER)
The first puzzle can be solved by using the bat to bounce the ball in direction of the lever, it will bounce on the wall and reach the other lever on the far right with a perfect timing.
The other puzzles can be solved using the same trick.