Moving Player through Collection of Clicked Points on a Surface

ClickedPointsMovement.cs

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

public class ClickedPointsMovement : MonoBehaviour
{
    public float speed = 15;
    Queue<Vector3> targetPointsQueue = new Queue<Vector3>();
    RaycastHit hit;
    Camera mainCam;
    Coroutine _MoveCR;
    int layerMask;

    void Awake()
    {
        mainCam = Camera.main;
        layerMask = LayerMask.GetMask("Ground");
    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            if (Physics.Raycast(mainCam.ScreenPointToRay(Input.mousePosition), out hit, 100, layerMask))
            {
                targetPointsQueue.Enqueue(hit.point);
                if (_MoveCR == null)
                {
                    _MoveCR = StartCoroutine(MoveThroughPoints(targetPointsQueue));
                }
            }
        }
    }

    IEnumerator MoveThroughPoints(Queue<Vector3> points)
    {
        while (points.Count > 0)
        {
            Vector3 targetPoint = points.Dequeue();
            targetPoint = new Vector3(targetPoint.x, transform.position.y, targetPoint.z);
            while (Vector3.Distance(transform.position, targetPoint) > 0.01f)
            {
                transform.position = Vector3.MoveTowards(transform.position, targetPoint, speed * Time.deltaTime);
                yield return null;
            }
        }
        _MoveCR = null;
    }
}