surface detection

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

public class SurfaceDetection : MonoBehaviour
{
    public bool IsSurface;
    Vector3 initialPos;

    private void Start()
    {
        initialPos = transform.localPosition;
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.K))
        {
            if (IsSurface)
            {
                transform.localPosition += new Vector3(10f, 0f, 0f);
                CheckGround();
            }
            else
            {
                Debug.Log("is surface false");
                transform.localPosition = new Vector3(initialPos.x, 0f, 0f);
                transform.localPosition += new Vector3(0f, 0f, 5f);
                IsSurface = true;
            }
        }
    }

    void CheckGround()
    {
        Debug.Log("check ground");
        RaycastHit Hit;

        if (Physics.Raycast(transform.localPosition, Vector3.down, out Hit, Mathf.Infinity))
        {
            IsSurface = true;
            Debug.Log(Hit.collider.name);
        }
        else
        {
            IsSurface = false;
            transform.localPosition -= new Vector3(10f, 0f, 0f);
        }
    }
}