Thank you! :) If you still can't beat it maybe check out this video someone recorded earlier:
You're not the first who has problems with the controls. I found it super hard to find a fitting control scheme for keyboard only. When I played platformers on PC Commander Keen was still a thing. I guess times change and cursor keys and Space and CTRL are not really used anymore :D When the whole jam is over I will upload a version with updated controls so hopefully everyone can enjoy the game.