Time is always the biggest enemy and this is best seen at a game jam.
Also, being at the beginning in this field, I'm still learning a lot, so at most I can create a prototype for a game, test an idea and possibly receive feedback that helps me improve.
Regarding the camera issue, I tested the game again in the browser and it works fine for me. It might be a problem with your mouse? because I used the Input.Getaxis("Mouse...) option as camera control.