How can I incorporate a Rotation Towards the Mouse Position into this Script? I Tried.

I made a script so that my character would travel to my mouse position with raycast and such. Now I also want it to rotate itself towards my mouse positions.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.AI;
 
 public class PlayerMovement : MonoBehaviour
 {
 
     public float speed = 10f;
     private Vector3 targetPos;
     private Vector3 startPos;
     private Vector3 mousePos;
 
 
     public void Start()
     {
         startPos = transform.position;
     }
 
     public void Update()
     {
         if (Input.GetMouseButton(0))
         {
             mousePos = Input.mousePosition;
             Ray mouseCast = Camera.main.ScreenPointToRay(mousePos);
             Plane groundPlane = new Plane(Vector3.up, Vector3.zero);
             RaycastHit hit;
             float rayLength;
 
             if (Physics.Raycast(mouseCast, out hit, 100))
             {
                 targetPos = new Vector3(hit.point.x, 2f, hit.point.z);
             }    
             
 
             if (groundPlane.Raycast(mouseCast, out rayLength))
             {
                 Vector3 pointToLook = mouseCast.GetPoint(rayLength);
                 transform.LookAt(new Vector3(pointToLook.z, transform.position.y, pointToLook.z));
             }
 
             transform.position = Vector3.MoveTowards(transform.position, targetPos, speed * Time.deltaTime);
             
         }
 
     }
 
 }

This part of the script is where I tried to incorporate the Rotation function.

   float rayLength;
   if (groundPlane.Raycast(mouseCast, out rayLength))
                 {
                     Vector3 pointToLook = mouseCast.GetPoint(rayLength);
                     transform.LookAt(new Vector3(pointToLook.z, transform.position.y, pointToLook.z));
                 }

It did not worked as planned. It rotate but not accurately with the mouse and sometimes not according or even the opposite direction of the mouse.