How Do I See My RayCast?

i am just trying to see my raycast but i dont know how to do it properly cuse i tried to do debug and did not work (i gusse i want it to work with this scpesific script but i dont know how)

yes i am new i know its stuipid question

 public GameObject decal;
     private float spreadfacotrX = 0.1f;
     private float spreadfacotrY = 0.1f;
 
 
     private void Update()
     {
         if (Input.GetButtonDown("Fire1"))
         {
             shoot();
             
         }
  
        
     }
     void shoot()
     {
         //bloom//
         Vector3 shootDirection = FindObjectOfType<Motion>().PlayerCam.transform.forward;
         if (FindObjectOfType<Gun>().aimed == false)
         {
             shootDirection.x += Random.Range(-spreadfacotrX, spreadfacotrX);
             shootDirection.y += Random.Range(-spreadfacotrY, spreadfacotrY);
         }
         //end of bloom//
         RaycastHit hit;
         if (Physics.Raycast(FindObjectOfType<Motion>().PlayerCam.transform.position, shootDirection, out hit,FindObjectOfType<Gun>().loadout[FindObjectOfType<Gun>().invintoryforother].range ))
         {
             
           var clonebullet =   Instantiate(decal, hit.point, Quaternion.LookRotation(hit.normal));
             Destroy(clonebullet, 5);
           
         }
     }
     
 
     }