Oh wow you 14? keep up the good work, some advice tho:
1. you should make the camera follow the player since some of our members find it a bit difficult to play it
2. as my programmer said, some of our laptops cannot get a correct UI scale size on your game so you should learn more about the UI aspect of the engine so your game can scale on many different screen resolutions
3. you should only play the audio when the gun is spawning bullet making it a bit more realistic
But overall such a fun game keep up the good work and keep moving forward