Poo poo parkour game

As I start creating games (with no intent to make them look good for now), I as for now want to learn how to improve my games and also learn how to not make my code look as sloppy as it is at the moment. In this game I've made a parkour game that automatically moves you forward, while you have to jump and move left and right as platforms are spawning straight ahead of you. Currently there's no sounds, I'll add that in sooner or later. Please add some comments telling me bugs and new features I could try adding to this game. Thank you!