This is very cute, but it suffers from some problems irt the platformer physics just generally - as some people have pointed out, the slipperiness of the game hurts it in the way that it requires a lot of precision with very unprecise controls. I would suggest you look up more advanced platformer controller techniques (as illustrated in things like the playable GMTK platformer essay) so that this project, which feels like it has potential to be something much better, can benefit from it!