Desactived player in collider

Helloo all,

I need help,

need search my player in scene , but is player spawn -

for cam cine is good, i need just desactived players if enter here

In touch collider and desactive my player, help me please

using UnityEngine;
using System.Collections;

public class LockPassenger : MonoBehaviour {
 
    public Camera camCine;



    void Start () {
 
    }
 
void OnTriggerEnter(Collider c)
    {

        GameObject.FindGameObjectWithTag("player").SetActive(false);
    
            camCine.gameObject.SetActive(true);

    }

    void OnTriggerExit(Collider c)
    {
     
        GameObject.FindGameObjectWithTag("player").SetActive(true);
        camCine.gameObject.SetActive(false);

    }
}

lol is fixeed [

GameObject](Unity - Scripting API:).FindGameObjectWithTag(“Player”).SetActive(false);

ahahah P no p ^^

well but after is not active more player after collider off ;(

is my new code 100% work good but collider now kill me

please all i need your help
if i put much speed in my plateform collider killer my player help me please

using UnityEngine;
using System.Collections;

public class LockPassenger : MonoBehaviour {
  
    public Camera camCine;
    public GameObject platform;


    void OnTriggerEnter(Collider col)
    {

      col.gameObject.transform.parent = platform.transform;

       camCine.gameObject.SetActive(true);

    }

    void OnTriggerExit(Collider col)
    {

        col.gameObject.transform.parent = null;

        camCine.gameObject.SetActive(false);

    }
}

no help `?