I'm assuming this is made for mobile because of the display. Maybe the asteroids would fit better if they were spaceships since it makes more sense for them to be shooting lasers rather than an asteroid.

this is dumb

It's a cool idea, an astronaut shoot asteroids, but the gameplay is bad. It needs some sound, and maybe some more detail, like how the asteroids are shooting the bullets/lasers, or maybe give the astronaut a laser gun. Just some thoughts!

You need to work on the sound! It could be much better and take that as an opportunity to learn something new.

The movement is a little slow for an bullet hell, and dude WTF with the astronaut haha, try platforms like open game art or kenney.

Don't give up, gonna see more of your work!