Like the other people say you need a tutorial. Your music fits the game well.
If you can here is my game: https://janjcl.itch.io/revengeonebos
I really like the artwork, did you create it yourself? Level 1 music fits well.
The controls are very (if player pressed jump this exact frame then jump), if you have the time and inclination then I'd suggest looking at implementing a buffer to it as control feels play a massive role in platformer games. Heres a post that goes into a bit more detail on what I mean Link.
The enemies need a bit better player detection, the first and second enemy immediately 180 killed me before I even had time to register them in my view, try to make it more human-like. At the moment your controls say 'move fast' and your enemies say 'tap D to make sure there isn't an enemy up ahead'