How to constantly rotate an object to 0f by X-axis?

public class Tank$$anonymous$$ovement : $$anonymous$$onoBehaviour { Quaternion OriginalRotation; private Rigidbody rb; public Transform tank; private float TurningRate = 10f; private Quaternion rotationGoal = Quaternion.Euler(0f, -178.511f, 0f); private Vector3 RotateToTarget; private void Start() { OriginalRotation = tank.rotation; rb = GetComponent(); } private void Update() { var velositi = transform.InverseTransformDirection(rb.velocity); if (Input.GetKey(KeyCode.W)) { rb.AddForce(gameObject.transform.forward 290f, Force$$anonymous$$ode.Force); if (velositi.z < -10) tank.Rotate(1f, 0f, 0f); } else if (Input.GetKey(KeyCode.S)) { rb.AddForce(gameObject.transform.forward -290f, Force$$anonymous$$ode.Force); if (velositi.z > 10) tank.Rotate(1f, 0f, 0f); }

     Debug.Log(velositi.z);
     if (velositi.z > 1)
     {
         tank.Rotate(-0.5f, 0f, 0f); 
     }
     else if (velositi.z < -1)
     {
         tank.Rotate(-0.5f, 0f, 0f);
     }
     if (velositi.magnitude < 1)
     {
         tank.rotation = Quaternion.RotateTowards(transform.rotation, rotationGoal, TurningRate);
     }
         
     else if (velositi.magnitude > -1)
     {
         tank.rotation = Quaternion.RotateTowards(transform.rotation, rotationGoal, TurningRate);
     }
         

     float horizontal$$anonymous$$ = Input.GetAxis("Horizontal");
     if (horizontal$$anonymous$$ > 0)
        gameObject.transform.Rotate(Vector3.up * Time.deltaTime * 100f);
     if (horizontal$$anonymous$$ < 0)
        gameObject.transform.Rotate(Vector3.down * Time.deltaTime * 100f);
 }

}

 private Rigidbody rb;

 public Transform tank;
 private float TurningRate = 10f;
 private Quaternion rotationGoal = Quaternion.Euler(0f, -178.511f, 0f);
 private Vector3 RotateToTarget;
 private void Start()
 {
     OriginalRotation = tank.rotation;
     rb = GetComponent<Rigidbody>();
 }
 private void Update()
 {
     var velositi = transform.InverseTransformDirection(rb.velocity);
     

     if (Input.GetKey(KeyCode.W))
     {
         rb.AddForce(gameObject.transform.forward * 290f, Force$$anonymous$$ode.Force);
         if (velositi.z < -10)
             tank.Rotate(1f, 0f, 0f);
     } 
     else if (Input.GetKey(KeyCode.S)) 
     {
         rb.AddForce(gameObject.transform.forward * -290f, Force$$anonymous$$ode.Force);
         if (velositi.z > 10)
             tank.Rotate(1f, 0f, 0f);
     } 

     Debug.Log(velositi.z);
     if (velositi.z > 1)
     {
         tank.Rotate(-0.5f, 0f, 0f); 
     }
     else if (velositi.z < -1)
     {
         tank.Rotate(-0.5f, 0f, 0f);
     }
     if (velositi.magnitude < 1)
     {
         tank.rotation = Quaternion.RotateTowards(transform.rotation, rotationGoal, TurningRate);
     }
         
     else if (velositi.magnitude > -1)
     {
         tank.rotation = Quaternion.RotateTowards(transform.rotation, rotationGoal, TurningRate);
     }
         

     float horizontal$$anonymous$$ = Input.GetAxis("Horizontal");
     if (horizontal$$anonymous$$ > 0)
        gameObject.transform.Rotate(Vector3.up * Time.deltaTime * 100f);
     if (horizontal$$anonymous$$ < 0)
        gameObject.transform.Rotate(Vector3.down * Time.deltaTime * 100f);
 }

}