Hi @Cafebabe!
There is something to be said for reinventing the classical style like you have here by using haphazardly put together random-seeming phrases. It sustains interest through a constant exposition of pure novelty. Usually, in this style, there should be some space allowed for themes to be exposited and some repetition for the themes to be recognized as such. As is, without a score, I can't really tell if the ideas in this piece are related to each other or not. They seem really random and chaotic. But like I said, in order for music to become somewhat catchy and like an ear-worm, some repetition or sequence is required. The music sounds like it's flying by the seat of its pants so to speak. The tempo change near the end has no reason or justification for it. Most of the piece's musical elements seem to exist simply for their own sake though so there's that disadvantage. Although if you isolated some of the more melodic parts of it and developed them and gave them room to breathe it could definitely be improved. Thanks for sharing!