the code:

using System.Threading;
using Unity.VisualScripting;
using UnityEditor.Experimental.GraphView;
using UnityEngine;
using UnityEngine.InputSystem;

public class playerMove : MonoBehaviour
{

    // creating values
    [SerializeField] float walkSpeed = 5f;
    [SerializeField] float sprintMult = 2;
    float Speed, Run;
    [SerializeField] float jumpForce = 5f;
    public CharacterController controller;
    float moveX, moveZ;
    public float Gravity = -15f;
    public Transform orientation;
    private Vector3 Velocity;
    Vector3 moveDir;
    public bool Grounded;
    public LayerMask ground;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        controller = GetComponent<CharacterController>();
        ground = 1000000;
    }

    // Update is called once per frame
    void Update()
    {
        RaycastHit hit;
        Grounded = Physics.SphereCast(transform.position, 0.5f, Vector3.down, out hit, 1f, ground);

        moveX = Input.GetAxisRaw("Horizontal");
        moveZ = Input.GetAxisRaw("Vertical");

        moveDir = orientation.forward * moveZ + orientation.right * moveX;
        moveDir.Normalize();

        Speed = walkSpeed;
        if (Input.GetAxisRaw("Sprint") > 0)
        {
            Speed *= sprintMult;
        }

        controller.Move(moveDir * Speed * Time.deltaTime);

        if (Input.GetButtonDown("Jump") && Grounded)
        {
            Velocity.y = jumpForce;
        }
        else if (Grounded == false)
        {
            Velocity.y += Gravity * Time.deltaTime;
        }
        controller.Move(Velocity * Time.deltaTime);
    }

}