why cant I access the script in ontriggerenter

when I try to initialize the gameobject and script in ontriggerenter nothing happens and when I initialize it in start I get errors saying that the s doesn't belong in current context

 private GameObject nm;
 public void OnTriggerEnter(Collider other)
 {
     nm =GameObject.Find("player");
     ninjamovement s = nm.GetComponent<ninjamovement>();
     s.body.position = (new Vector2(0, 0));
     s.Deaths += 1;
 }