Photon Is mine

I am working on a racing game and I have a problem, when i enters a room and spawn to the ground it works fine but when another player enters he turns his camera into my camera and he can control my vehicle

 (CSharp):
    void Awake()
    {
        SpawnPlayer();
    }
    public void SpawnPlayer()
    {
        Vector3 p = Vector3.zero;
        Quaternion r = Quaternion.identity;
        //Get Position and rotation from a spawnPoint
        GetSpawnPoint(out p, out r);
        SpawnPlayer(p, r);
    }
    public void SpawnPlayer(Vector3 Position, Quaternion Rotation)
    {
        if (PlayerPrefab == null)
        {
            Debug.Log("Player Prefabs I was not assigned yet!");
            return;
        }
        //Sure of have just only player on room
        if (m_Player != null)
        {
            if (m_Player.GetComponent<bl_PlayerCar>().isPlayerInsideVehicle)
            {
                m_Player.GetComponent<bl_PlayerCar>().ExitVehicle();
            }
            NetworkDestroy(m_Player);
        }
        StartCoroutine(CountStart());
 
 
        Vector3 fp = Position + Vector3.up;
         m_Player = PhotonNetwork.Instantiate(PlayerPrefab.name, fp, Rotation, 0);
 
        if (photonView.IsMine)
        {
            SkyCamera.SetActive(false);
            ((MonoBehaviour)m_Player.GetComponent("CarController")).enabled = true;
            ((MonoBehaviour)m_Player.GetComponent("CarUserControl")).enabled = true;
            m_Player.transform.Find("VehicleCamera").gameObject.SetActive(true);
        }
        else
        {
            SkyCamera.SetActive(false);
            ((MonoBehaviour)m_Player.GetComponent("CarController")).enabled = true;
            ((MonoBehaviour)m_Player.GetComponent("CarUserControl")).enabled = true;
            m_Player.transform.Find("VehicleCamera").gameObject.SetActive(true);
        }

Create empty GameObject and add script on it

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;
using Photon.Realtime;

public class PixelGunGameManager : MonoBehaviourPunCallbacks
{
[SerializeField]
GameObject PlayerPrefabs;
// Start is called before the first frame update
void Start()
{
if (PhotonNetwork.IsConnected)
{
if (PlayerPrefabs != null)
{
int randomPoint = Random.Range(-20, 20);
PhotonNetwork.Instantiate(PlayerPrefabs.name, new Vector3(randomPoint, 0, randomPoint), Quaternion.identity);
}

    }
}

// Update is called once per frame
void Update()
{
    
}
public override void OnJoinedRoom()
{
    Debug.Log(PhotonNetwork.NickName + "Joined to " + PhotonNetwork.CurrentRoom.Name);
}
public override void OnPlayerEnteredRoom(Player newPlayer)
{
    Debug.Log(newPlayer.NickName + "Joined to " + PhotonNetwork.CurrentRoom.Name+""+PhotonNetwork.CurrentRoom.PlayerCount);
}

}

Check it