How to make the Turret Cannon rotate (Transform) correctly with the Beam?

Question

C++ / C#

Cheerful time of the day, I'm again disturbing the Toaster forum with my tricky questions))) The question is how to rotate the gun along the y axis using a beam from the center of the camera and moving the mouse (To raise and lower the gun)... I already did a similar method for the turret and it works perfect...
Here it is:

//Движение турельки
         Quaternion qTurret = Quaternion.LookRotation(planePoint - turretPosition,turretUpTransform);
         turretTransform.rotation = Quaternion.RotateTowards(turretTransform.rotation, qTurret,30.0f * Time.deltaTime);

I did a similar method, but the gun turned over 90 and you can’t let go or raise the gun...
Here is a piece with the movement of the gun:

//Движение пушки
         Vector3 v = new Vector3(0,distanceToPlane,(planePoint - turretPosition).magnitude);
         Quaternion qGun = Quaternion.LookRotation(v);
         if(Quaternion.Angle(Quaternion.identity, qGun) <= 30.0f)
             gunTransform.localRotation = Quaternion.RotateTowards(gunTransform.localRotation,qGun,30.0f * Time.deltaTime);

I had to be smart and I made it simpler - MouseLookY... Everything would be fine, but due to the fact that in the "Imaginary" Ship there will be from 2 to 4 Controlled guns, the accuracy suffers...
Here is the MouseLook script:

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

[AddComponentMenu("Camera-Control/Smooth Mouse Look")]
public class GunRotation : MonoBehaviour
{
    public float sensitivityY = 15F;

    public float minimumY = -30F;
    public float maximumY = 30F;

    float rotationY = 0F;

    private List<float> rotArrayY = new List<float>();
    float rotAverageY = 0F;

    public float frameCounter = 20;

    Quaternion originalRotation;

    void Update()
    {
        rotAverageY = 0f;

        rotationY += Input.GetAxis("Mouse Y") * sensitivityY;

        rotArrayY.Add(rotationY);

        if (rotArrayY.Count >= frameCounter)
        {
            rotArrayY.RemoveAt(0);
        }
        for (int j = 0; j < rotArrayY.Count; j++)
        {
            rotAverageY += rotArrayY[j];
        }
        rotAverageY /= rotArrayY.Count;

        rotAverageY = ClampAngle(rotAverageY, minimumY, maximumY);

        Quaternion yQuaternion = Quaternion.AngleAxis(rotAverageY, Vector3.left);
        transform.localRotation = originalRotation * yQuaternion;
    }

    void Start()
    {
        Rigidbody rb = GetComponent<Rigidbody>();
        if (rb)
            rb.freezeRotation = true;
        originalRotation = transform.localRotation;
    }

    public static float ClampAngle(float angle, float min, float max)
    {
        angle = angle % 360;
        if ((angle >= -360F) && (angle <= 360F))
        {
            if (angle < -360F)
            {
                angle += 360F;
            }
            if (angle > 360F)
            {
                angle -= 360F;
            }
        }
        return Mathf.Clamp(angle, min, max);
    }
}

Screenshot of what is happening on the stage and in the game:

If there are any options or materials about this, I will be glad)))
Thank you in advance for your support and help)