Thank you for such a detailed review. This was my first experience in level design, I have not made games based on levels before, so it is possible that some of them may seem the same (although I tried my best to make them interesting).
As for the controls: I thought about making jump as space, but there was a problem with the bloat of the main character, I didn’t know which key would be best to bind this ability to make it convenient, so I decided to leave this configuration.
In any case, thanks for your notes, I will definitely take them into account when finalizing the game.