It was too hard to control for me and it felt unstable. I think the camera should definitely be smoother and slower, that would make a HUUUGE difference
I think one of the most important things is clearly defining what the player's inputs do, and what they can expect the outcome of their actions to be. In this game, when I move the mouse a bit, the camera rotates all the way, but I expected it to move a bit so that I can aim in front of me.
Just something to consider for your future games 👍