Unity3d no-turning VRAG

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

public class Vrag : MonoBehaviour
{
    public GameObject Shot2;
    public GameObject Gun2;
    public float shotDelay2;
    public float speed;
    float nextShotTime2;
    float countshoot2;


    Rigidbody vrag;
    // Start is called before the first frame update
    void Start()
    {
        vrag = GetComponent<Rigidbody>();
        //  vrag.velocity = new Vector3(2, 0, 5);
    }

    // Update is called once per frame
    void Update()
    {
        float moveHorizontal = Input.GetAxis("Horizontal");
        float moveVertical = Input.GetAxis("Vertical");
        vrag.velocity = new Vector3(moveHorizontal, 0, 0) * speed;

        //без поворота

        vrag.transform.localRotation = Quaternion.Slerp(vrag.transform.rotation,
      Quaternion.Euler(0, 0, 0), speed * Time.deltaTime);



        //  Instantiate(Shot2, Gun2.transform.position, Quaternion.identity);

        if (Time.time > nextShotTime2)
        {
            Instantiate(Shot2, Gun2.transform.position, Quaternion.identity);
            nextShotTime2 = Time.time + shotDelay2;

        }

    }

    void OnTriggerEnter(Collider other)
    {
        countshoot2++;
        print(countshoot2);
        if (countshoot2 > 10)

        {
            countshoot2 = 0;
            if (other.tag == "shiptrig")
                Destroy(other.gameObject);
            Destroy(gameObject);
        }

    }

}