Player rotation

            // left & right, only rotate the body
            var horizontalInput = Input.GetAxisRaw("Horizontal"); // -1 ... 1
            transform.rotation = Quaternion.Euler(new Vector2(0, horizontalInput * sensitivity));

            // up & down, only rotate the camera
            var verticalInput = Input.GetAxisRaw("Vertical");
            var constrainedInput = Mathf.Clamp(verticalInput * sensitivity, -maxRotation, maxRotation);
            
            // get the camera and apply rotation
            Camera.main.transform.rotation = Quaternion.Euler(new Vector2(constrainedInput, 0));