I think this could be a fun game if I was better at third person shooter, I think I had trouble with the map UI and understanding where the bullet is coming from, the game play feels solid when I enter into battle.
UI definitely needs more polish, try to make it apart of your sci-fi world with more sci-fi feel, and improve your cover design and thumbnail to attract more players. Sound wise definitely add more sound ambience and bgms to get people into the mood of your game, I suggest using stock sounds and bgms, you can find plenty free ones right here on Itchio take advantage of it. :) Example: https://fardifferent.itch.io/loops
You can also find free scifi UI templates on Itchio like this one: https://wenrexa.itch.io/holoui