Nice game! I died a lot right at the start because hitting the clouds (?) was super easy to do since you can't influence how quickly you fall, meaning you need to perfectly time out your jumps. This isn't easy also because the obstacles come at you so quickly as well. As feedback I would say that balancing the difficulty is much needed, so for instance give the player more ways to move around in the air and influence their direction, and/or make the obstacles slightly slower and/or reduce their hitbox.
Regardless, nice work on this game, for a first submission it's not bad!