public Camera cam;
 public Camera cam;
 private Camera newCam;
 bool playerDead = true;
 public Transform player;
 private bool hasSpawnedCam = false;

if (playerDead)
        {
            if(!hasSpawnedCam)
            {

                newCam =  Instantiate(cam, player.position, player.rotation);
                hasSpawnedCam = true;
            }

            if (newCam.transform.position.y < 20)
            {
                newCam.transform.Rotate(Vector3.down * 90);
                newCam.transform.position += new Vector3(0, 0.1f, 0);
                newCam.transform.LookAt(player);
            }

        }


    }