Trying to get objects to instantiate and move at different angles

I'm trying to make it so when you click left, three balls will fire from the sides, each having a slightly different angle to provide a bit of range. It's a 2D pirate ship game, hence the balls shoot from the sides instead of the front. But even though I was certain I got most of it right, they all merge into the same location. Here's the entire code, please take your time to look at it and maybe alter it a bit.

 using UnityEngine;
 using System.Collections;
 
 public class player_canon_ball : MonoBehaviour {
     public GameObject canonballPrefab;
     public float fireDelay = 0.25f;
     float cooldownTimerPort = 0f;
     float cooldownTimerStarboard = 0f;
     float fireSpeed = 5;
     void Update()
     {
         cooldownTimerPort -= Time.deltaTime;
         cooldownTimerStarboard -= Time.deltaTime;
         if (Input.GetButton("Fire1") && cooldownTimerPort <= 0)
         {
             Debug.Log("Fire Port!");
             cooldownTimerPort = fireDelay;
             GameObject canonball1 = Instantiate(canonballPrefab, transform.position, Quaternion.Euler(0,-90,0)) as GameObject;
             GameObject canonball2 = Instantiate(canonballPrefab, transform.position, Quaternion.Euler(0, -60, 0)) as GameObject;
             GameObject canonball3 = Instantiate(canonballPrefab, transform.position, Quaternion.Euler(0, -120, 0)) as GameObject;
             Rigidbody2D crb1 = canonball1.GetComponent<Rigidbody2D>();
             Rigidbody2D crb2 = canonball2.GetComponent<Rigidbody2D>();
             Rigidbody2D crb3 = canonball3.GetComponent<Rigidbody2D>();
             crb1.velocity = canonball1.transform.forward * fireSpeed;
             crb2.velocity = canonball2.transform.forward * fireSpeed;
             crb3.velocity = canonball3.transform.forward * fireSpeed;
         }
         if (Input.GetButton("Fire2") && cooldownTimerStarboard <= 0)
         {
             Debug.Log("Fire Starboard!");
             cooldownTimerStarboard = fireDelay;
             Vector2 canon4 = new Vector2(transform.position.x, transform.position.y);
             Vector2 canon5 = new Vector2(transform.position.x, transform.position.y);
             Vector2 canon6 = new Vector2(transform.position.x, transform.position.y);
             GameObject canonball4 = Instantiate(canonballPrefab, canon4, Quaternion.Euler(0, 90, 0)) as GameObject;
             GameObject canonball5 = Instantiate(canonballPrefab, canon5, Quaternion.Euler(0, 120, 0)) as GameObject;
             GameObject canonball6 = Instantiate(canonballPrefab, canon6, Quaternion.Euler(0, 60, 0)) as GameObject;
             Rigidbody2D crb4 = canonball4.GetComponent<Rigidbody2D>();
             Rigidbody2D crb5 = canonball5.GetComponent<Rigidbody2D>();
             Rigidbody2D crb6 = canonball6.GetComponent<Rigidbody2D>();
             crb4.velocity = canonball4.transform.forward * fireSpeed;
             crb5.velocity = canonball5.transform.forward * fireSpeed;
             crb6.velocity = canonball6.transform.forward * fireSpeed;
         }
     }
 }

Take as much time as you need, I'm just making this for fun right now, no deadlines or anything.