For a beginner project, you should be proud of this. I've played games in jams from people that have had far more experience that feel worse and are riddled with bugs. There's not much here, but what's here feels decent, the collisions act as expected, the game restarts when you fall, and you even have a pause feature (which is a feature even my game doesn't have). You should be proud of this, and I'm sure you learned a lot. Great job.