ok this is surprisingly interesting, but unfortuantely there are quite some improvements needed:
-first of all the font: it's not really easy to read into it, but it's a nice touch that you made your own
-second: the player control, the ships turns really slow and there is no backward, forward movmemnt it's really jumpy and this means sometime you shoot an asteroid in front of you and it splits in your direction and you have no hope to escape, if you can add an acceleration and inertia mechanic it would be really interesting (there are plenty of tutorials online
-third sounds: sound it's really important to give feedback and engaging the player, you can evn look just for some free sample online if you can't make your own
-fourth: more UI, there is no way to stop or exit a game, the map itself is at a different ratio than window so there is a gap on the bottom, maybe you can se it to put some more stat (more visible ship lives, gathered resources, number of waves remaining and so on)
overall i enyojed it and for a first time solo developing it's quite solid!
big bug: once you pass the first system you can travel even going to negative hydrogen so you can spoil yourself all the game!