Raycast is not working, oncliking on the one player, the rest of the players also firing bullets, and collision not working too

My player manager file is this ***

public class PlayerManager : MonoBehaviour {

 private IndividualPlayerHandler mPHandler;

 public GameObject _Player;

// public GameObject[] _arrRefer;

 public const int maxHealth = 100;
 public int currentHealth = maxHealth;
 public RectTransform healthBar;
 //  private bool destroyOnDeath;


 private Vector3[] currPlayerHandler = { new Vector3(-3f, 0.85f, -4f), new Vector3(-3f,0.85f, -1f), new Vector3(-3f, 0.85f, 2f)};

 public void Start()
 {
     mPHandler = GameObject.Find("Player").GetComponent<IndividualPlayerHandler>();
     for (int i = 0; i<currPlayerHandler.Length; i++)
    {
         Instantiate(_Player, currPlayerHandler[i], transform.rotation);
         Debug.Log("Player checking here" + _Player);

     }
 }

 //List<IndividualPlayerHandler> _arrIndividualPlayer = new List<IndividualPlayerHandler>();
 //private IndividualPlayerHandler mcurrActiveIndividual = null;
 //public void OnSelectedPlayer()
 //{
 //    for(int i=0; i<_arrIndividualPlayer.Count; i++)
 //    {
 //        mcurrActiveIndividual = ((GameObject)Instantiate(_Player)).GetComponent<IndividualPlayerHandler>();
 //}
 //}


 public void Update()
 {
     OnMouseDown();
         }

 public void OnMouseDown()
 {
     if (Input.GetMouseButtonDown(0))
     {
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
         RaycastHit hit;
         if (Physics.Raycast(ray, out hit))
         {
           Transform objectHit = hit.transform;
            mPHandler.PlayerBulletFire();
            Debug.Log("ColliderName" + hit.collider.name);
         }
     }
 }

 

 private void OnBulletCollision(int amount)
 {
     currentHealth -= amount;
     if (currentHealth <= 0 || currentHealth >= 4)
     {
         currentHealth = 0;
         Debug.Log("Dead!");
     }
 }
     

}

INDIVIDUAL PLAYER MANAGER *** using System.Collections; using System.Collections.Generic; using UnityEngine;

public class IndividualPlayerHandler : MonoBehaviour {

// public PlayerManager pBullet;

 public GameObject bulletPrefab;
 public Transform BulletSpawn;
 public Transform BulletSpawn1;
 public Transform BulletSpawn2;

  public Vector3[]  BulletSpawningPoints = { new Vector3(-2.85f, 0.85f, -4f), new Vector3(-2.85f, 0.85f, -1f), new Vector3(-2.85f, 0.85f, 2f) };


 public void PlayerBulletFire()
 {

     var bullet = Instantiate(bulletPrefab, BulletSpawn.transform.position, BulletSpawn.transform.rotation);
      var bullet1 = Instantiate(bulletPrefab, BulletSpawn1.transform.position, BulletSpawn1.transform.rotation);
     //var bullet2 = Instantiate(bulletPrefab, BulletSpawn2.transform.position, BulletSpawn2.transform.rotation);


     // Add velocity to the bullet
     bullet.GetComponent<Rigidbody>().velocity = bullet.transform.forward * 6;
      bullet1.GetComponent<Rigidbody>().velocity = bullet.transform.forward * 6;
     //   bullet2.GetComponent<Rigidbody>().velocity = bullet.transform.forward * 6;
 }

 //    public void PlayerBulletFire()
 //    {
 //            //for (int i = 0; i<BulletSpawningPoints.Length; i++)
 //            {

 //                var bullet = (Instantiate(bulletPrefab, BulletSpawn.transform.position, BulletSpawn.transform.rotation));
 //                bullet.GetComponent<Rigidbody>().velocity = bullet.transform.forward * 6;

 //                var bullet1 = Instantiate(bulletPrefab, BulletSpawn1.transform.position, BulletSpawn1.transform.rotation);
 //                bullet1.GetComponent<Rigidbody>().velocity = bullet1.transform.forward * 6;
 //            }
 //        }
 //        //if (gameObject.tag == "BulletSpawn1")
 //        //{

 //        //}

 //    }

 //    // var bullet2 = Instantiate(bulletPrefab, BulletSpawn2.transform.position, BulletSpawn2.transform.rotation);
 //    //// Add velocity to the bullet


 //    //bullet2.GetComponent<Rigidbody>().velocity = bullet2.transform.forward * 6;
 //}

} ,