Triple Shot in 2D TopDown

Hello, Unity community. What I want is to make a triple shot weapon called Trifi-Shi in my 2d Top-Down Shooter. That means if I click (the middle bullet's direction), it will instantiate three bullets - middle one is in a correct mouse direction and other two are about 45 degrees to left or right each.

My shoot system works like this: one script (Shooting) detects if player clicks and which projectile should be spawned according to weapon equiped (in enum). Then the script instantiates a bullet.

Then I have the second script which is attached to the projectile (Projectile) which moves the bullet to the mouse position based on which weapon I use. So now I don't know how to instantiate three bullets (if I have equipped Trifi-Shi weapon) and each of them move in other direction in regards to mouse pos.

This is my shooting script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Shooting : MonoBehaviour
 {
     GameManager gameManager;
 
     public GameObject uLaser;
     public GameObject magnumBum;
     public GameObject robboRifle;
     public GameObject shugaruGun;
     public GameObject doomBreaker;
     public GameObject trifiShi;
 
 
     float PshotDelay = 0.05f;
     float SshotDelay = 0.5f;
 
     float fireRate = 0.15f;
     float nextFire = 0.0f;
 
     bool canPshot = true;
     bool canSshot = true;
 
 
     Transform playerPos;
 
 
     void Start()
     {
         gameManager = FindObjectOfType<GameManager>();
         playerPos = GetComponent<Transform>();
     }
     void Update()
     {
         if (Input.GetButton("Fire1") && Time.time > nextFire && gameManager.pWeapon == GameManager.PrimaryWeapon.RobboRifle)
         {
             nextFire = Time.time + fireRate;
 
             FindObjectOfType<AudioManager>().Play("Player Shoot");
 
             Instantiate(robboRifle, playerPos.position, Quaternion.identity);
         }
 
         if (Input.GetMouseButtonDown(0) && canPshot && gameManager.pWeapon != GameManager.PrimaryWeapon.RobboRifle)
         {
             FindObjectOfType<AudioManager>().Play("Player Shoot");
 
             if (gameManager.pWeapon == GameManager.PrimaryWeapon.ULaser)
                 Instantiate(uLaser, playerPos.position, Quaternion.identity);
             if (gameManager.pWeapon == GameManager.PrimaryWeapon.MagnumBum)
                 Instantiate(magnumBum, playerPos.position, Quaternion.identity);
 
             canPshot = false;
             StartCoroutine(PshotDelayCoroutine());
            
         }
         if (Input.GetMouseButtonDown(1) && canSshot)
         {
             FindObjectOfType<AudioManager>().Play("Player Shoot");
 
             if (gameManager.sWeapon == GameManager.SecondaryWeapon.ShugaruGun)
                 Instantiate(shugaruGun, playerPos.position, Quaternion.identity);
             if (gameManager.sWeapon == GameManager.SecondaryWeapon.DoomBreaker)
                 Instantiate(doomBreaker, playerPos.position, Quaternion.identity);
             if (gameManager.sWeapon == GameManager.SecondaryWeapon.TrifiShi)
             {
                 Instantiate(trifiShi, playerPos.position, Quaternion.identity);
                 Instantiate(trifiShi, playerPos.position, Quaternion.identity);
                 Instantiate(trifiShi, playerPos.position, Quaternion.identity);
             }
 
             canSshot = false;
             StartCoroutine(SshotDelayCoroutine());
         }
     }
 
     IEnumerator PshotDelayCoroutine()
     {
         yield return new WaitForSeconds(PshotDelay);
         canPshot = true;
     }
 
     IEnumerator SshotDelayCoroutine()
     {
         yield return new WaitForSeconds(SshotDelay);
         canSshot = true;
     }
 }
 

And this is the projectile script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 
 public class Projectile : MonoBehaviour
 {
     public enum Weapon
     {
         ULaser,
         MagnumBum,
         RobboRifle,
         ShugaruGun,
         DoomBreaker,
         TrifiShi
     }
 
 
     public Weapon weapon;
 
     public float speed;
     public int damage;
     public GameObject shootEffect;
     public GameObject doomShootEffect;
 
     public GameObject boomZone;
 
     Vector3 tagetToLeft;
     Vector3 target;
     Vector3 tagetToRight;
 
     public int rotation_on_set = 0;
 
 
     void Start()
     {
         if (weapon == Weapon.ULaser || weapon == Weapon.RobboRifle || weapon == Weapon.DoomBreaker)
         {
             target = Camera.main.ScreenToWorldPoint(Input.mousePosition);
 
             Vector3 diff = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
             diff.Normalize();
             float rotZ = Mathf.Atan2(diff.y, diff.x) * Mathf.Rad2Deg;
             transform.rotation = Quaternion.Euler(0f, 0f, rotZ + rotation_on_set);
         }
 
         if (weapon == Weapon.MagnumBum || weapon == Weapon.ShugaruGun)
         {
             target = (Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position);
             target.z = 0;
             target.Normalize();
         }
         if(weapon == Weapon.TrifiShi)
         {
             target = Camera.main.ScreenToWorldPoint(Input.mousePosition);
 
             Vector3 diff = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
             diff.Normalize();
             float rotZ = Mathf.Atan2(diff.y, diff.x) * Mathf.Rad2Deg;
             transform.rotation = Quaternion.Euler(0f, 0f, rotZ + rotation_on_set);
         }
             
     }
 
     void Update()
     {
         if (weapon == Weapon.ULaser || weapon == Weapon.RobboRifle)
         {
             transform.position = Vector2.MoveTowards(transform.position, target, speed * Time.deltaTime);
 
             if (Vector2.Distance(transform.position, target) < 0.2f)
             {
                 Instantiate(shootEffect, transform.position, Quaternion.identity);
                 Destroy(gameObject);
             }
         }
         if (weapon == Weapon.MagnumBum || weapon == Weapon.ShugaruGun)
         {
             transform.position = transform.position + target * speed * Time.deltaTime;
             StartCoroutine(Destroy());
         }
         if(weapon == Weapon.TrifiShi)
         {
             transform.position = Vector2.MoveTowards(transform.position, target, speed * Time.deltaTime);
 
             if (Vector2.Distance(transform.position, target) < 0.2f)
             {
                 Instantiate(shootEffect, transform.position, Quaternion.identity);
                 Destroy(gameObject);
             }
         }
         if(weapon == Weapon.DoomBreaker)
         {
             transform.position = Vector2.MoveTowards(transform.position, target, speed * Time.deltaTime);
             if (Vector2.Distance(transform.position, target) < 0.2f)
             {
                 MakeABoom();
             }
         }
 
 
     }
 
     void OnTriggerEnter2D(Collider2D other)
     {
         if (other.CompareTag("Enemy"))
         {
             Instantiate(shootEffect, transform.position, Quaternion.identity);
         }
         if (other.CompareTag("EnemyProjectile"))
         {
             Instantiate(shootEffect, transform.position, Quaternion.identity);
         }
     }
 
     IEnumerator Destroy()
     {
         yield return new WaitForSeconds(2f);
         Destroy(gameObject);
     }
 
     public void MakeABoom()
     {
         Instantiate(boomZone, transform.position, Quaternion.identity);
         Instantiate(doomShootEffect, transform.position, Quaternion.identity);
         Destroy(gameObject);
     }
 
 }

Thanks for any response as well.

[2]: /storage/temp/163429-ueso.png