Locking on target with angle (mostly working)

Hi, Im a bit new to unity and 3D programming in general so I apologize for this basic question. Furthermore, it appears that is a very common question but after looking around I guess Im just not understanding some key concepts.

At the moment I have a turret object that changes rotation based on the players position. (locked to y) Its working fine. The turret also fires a fireball every second from a "spawn point" in front of it. What I want to happen is to have the spawnPoint, which it fires from, angle down and up based on the players position. I thought I could do this with LookRotation but it fires straight all the time. I assume this is because of the transform.forward when I fire.

Here is my code for my script.

 var LookAtTarget:Transform;
 var damp = 1.0;
 var bulletPrefab:Transform;
 var passedTime = 0.0;
 var shootRate:double = 1.0;
 var homingSpeed:double = 3.0;
 var minDistance:double = 3.0;
 
 function Update () 
 {
     //x and z lock
     if (LookAtTarget)
     {
         //Move toward player position
         
         //float fX = desX-playerX;
         var fx = gameObject.Find("Worm").transform.position.x - transform.position.x;
         var fy = gameObject.Find("Worm").transform.position.y - transform.position.y;
         var fz = gameObject.Find("Worm").transform.position.z - transform.position.z;
 
         var dist = Mathf.Sqrt(fx * fx + fy * fy + fz * fz);
         
         if (dist > minDistance)
         {
             var step = homingSpeed / dist;
         
             transform.position.x += (fx * step) * Time.deltaTime;
             transform.position.z += (fz * step) * Time.deltaTime;
         }
             
         var rotate = Quaternion.LookRotation(LookAtTarget.position - transform.position);
         transform.rotation = Quaternion.Slerp(transform.rotation, rotate, Time.deltaTime * damp);
         
         //Move shooting mechanism angeled at player
         var rotateFireball = Quaternion.LookRotation(LookAtTarget.position - transform.position);
         
         transform.FindChild("spawnPoint").transform.rotation = rotateFireball;
         //transform.FindChild("spawnPoint").transform.rotation = Quaternion.Slerp(transform.FindChild("spawnPoint").transform.rotation, newRotateFireball, Time.deltaTime * damp);
         
         passedTime += Time.deltaTime;
         
         //1 second has passed
         if (passedTime >= shootRate)
             Shoot();
     }
     
     transform.rotation.x = 0;
     transform.rotation.z = 0;
 }
 
 function Shoot()
 {
     var bullet = Instantiate(bulletPrefab, transform.Find("spawnPoint").transform.position, Quaternion.identity);
     
     bullet.gameObject.tag = "enemyProjectile";
     bullet.rigidbody.AddForce(transform.FindChild("spawnPoint").transform.forward * 1000);
     passedTime = 0;
 }

Im not even fully sure why LookRotation(target.position - transform.position) is necessary either. But it seems to work for the turret rotation. I figure you would just need LookRotation(target.position)

Anywho, if anyone can help, I would greatly appreciate it. Thanks!