Congratulations on finishing the game!
I like the graphics and music - good job, I also liked the rain outside the tower.
I didn't go further than the second floor - it was very difficult.
I think that the controls and the way of jumping were not very successful. In Jump King, the controls are simpler and more understandable, even though it is also a rage game.
Maybe you should make one button for jumping (hold to gain strength) and in the air use 2 buttons to control the character (left-right). Now the game is similar to complex golf, which was crossed with a piano - I constantly held one key down so that the magician stood in place, and to jump I had to quickly release the hold button and press the jump button . . .