Hello! saw your tutorials on yt and came to check your game^^  "R" and "F" buttons are tricky. I died in the tutorial part and went straight to the game. Then I finished lvl 1 and didn`t know what to do with the door - it felt like it is the end of the game. It might be a good idea to list control buttons in the game description. Or allow player to replay tutorial part without refreshing the page.
Also to improve how jumps feel, maybe you should check jump buffering concept. you can just search "jump buffering godot 4" on youtube and check what it looks like. 

Anyways great game! Keep up a good work and good luck further!