How to make a player crouch without making it spin around?

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1

Hi,
I’m having a big physics bug. When I play my game and presses C on the keyboard to make my player crouch, my player spins around himself and move in different directions. Does anyone have a solution to my crouch/physics problem?

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

public class PlayerMovement : MonoBehaviour
{
    public Rigidbody rb;
    public Transform PlayerHeight;
    public float normalHeight, crouchHeight;

    public float horizontalInput;
    public float verticalInput;
    public float speed = 3;
    public float jump = 10;
    public float climb = 5;
    private bool isGrounded = false;

    // Update is called once per frame
    void Update()
    {

        horizontalInput = Input.GetAxis("Horizontal");
        verticalInput = Input.GetAxis("Vertical");

        // Crouch
        if (Input.GetKeyDown(KeyCode.C))
        {
            PlayerHeight.localScale = new Vector3 (0, crouchHeight, 0);
        } 
        if (Input.GetKeyUp(KeyCode.C))
        {
            PlayerHeight.localScale = new Vector3(0, normalHeight, 0);
            PlayerHeight.position += Vector3.up * (normalHeight / 2);
        }
        
        // Jump
        if (transform.position.y <= 0.3)
        {
            isGrounded = true;
        }
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded == true)
        {
            rb.AddForce(Vector3.up * jump, ForceMode.Impulse);
            isGrounded = false;
        }
    }

    // Climb
    private void OnCollisionEnter(Collision collision)
    {
        // Climb
        if (Input.GetKeyDown(KeyCode.F) && collision.gameObject.CompareTag("Wall"))
        {
            transform.position += Vector3.up * climb * Time.deltaTime;
        }
    }
    

    private void FixedUpdate()
    {
        Moveing();
    }
    public void Moveing()
    {
        if (Mathf.Abs(verticalInput) > 0 || Mathf.Abs(horizontalInput) > 0)
        {
            transform.Translate(Vector3.forward * Time.deltaTime * verticalInput);
            transform.Translate(Vector3.right * Time.deltaTime * speed * horizontalInput);

        }
    }
}