I thought you only hosted game jams, not participated in them :D
I played the game on mobile, and it runs very well. It has juice and nice animations. I like how «hatrick» is the name of the game, it’s a fun interpretation of the theme. The game itself is fun, though as you mention, the controls are a bit difficult. I did play the gane many times, because I wanted to get a better score, so the game loop and positive feedback loop is a solid foundation. I was actually able to catch 3 hats in one jump. It would feel extra rewarding if I got more points for a combo!
I think it could be fun to experiment with the idea to drag the finger to determine how high he jumps. The gameplay will probably be very different from what you have, but it’s just a thought. Good job on the entry!