Rotate character

Question

I want my player character (the feet ) to stick to the platform (like in the photo) rather than falling or following the physics. I want it to move like a spider but I am stuck.

With the help of this site, I was able to get to find the solution of my problem to get the following result.

Now I have this code and I cannot get it working because of my less understanding of the whole process. The script is

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

public class PlayerRays : MonoBehaviour
{

    public float distance;
    public RaycastHit2D leftHitInfo;
    public RaycastHit2D rightHitInfo;

    public LayerMask layer;
    public float offset;
    public bool rayCastThrown;

    public float maxRotationDegrees;
    public float positionOffsetY;

    bool doubleRaycasts (Vector2 rightOffSet, Vector2 leftOffSet) {
        
        

        return Physics2D.Raycast (rightOffSet, Vector2.down,  distance, layer) && Physics2D.Raycast (leftOffSet, Vector2.down,  distance, layer);
    }

    void PositionOnTerrain () {
        
        Vector3 averageNormal = ( leftHitInfo.normal + rightHitInfo.normal ) / 2;
        Vector3 averagePoint = (leftHitInfo.point + rightHitInfo.point) / 2;

        Quaternion targetRotation = Quaternion.FromToRotation (Vector2.up, averageNormal);
        Quaternion finalRotation = Quaternion.RotateTowards (transform.rotation, targetRotation, maxRotationDegrees);

        transform.rotation = Quaternion.Euler (0,0, finalRotation.eulerAngles.z);

        transform.position =averagePoint + transform.up * positionOffsetY;

        Debug.DrawRay (transform.position, -averageNormal,  Color.red);

    }
    
    void Update () {
        Vector2 leftOffSet = new Vector2 (transform.position.x - offset, transform.position.y);
        Vector2 rightOffSet = new Vector2 (transform.position.x + offset, transform.position.y);
        
        leftHitInfo = Physics2D.Raycast (leftOffSet, Vector2.down);
        rightHitInfo = Physics2D.Raycast (rightOffSet, Vector2.down);
        rayCastThrown = doubleRaycasts (rightOffSet, leftOffSet);
        Debug.DrawRay (leftOffSet , Vector2.down * distance, Color.yellow);
        Debug.DrawRay (rightOffSet, Vector2.down * distance, Color.cyan);

        PositionOnTerrain ();
    

    }


}

I cannot get it to working at all and while it seems to be working sometime and I can only see the red line working sometime (very rarely). I cannot pin point the problem as I see no result at all. I cannot wrap my head around the part of Quaternions and after that as given in the above link.