how to rotate a Rigidbody2D player on a moving platform.

Hello i managed to create a script that makes my player move on a platform in top down perspective. I also want that when the platform is rotating the player rotates too, but not around its own middlepoint.

this is how it looks now:

as you can see the platform is rotating but the player is not rotating with it.and i the second gif you can see that the platform is constantly moving right and the player is moving with it. The code that i use to achieve this is this:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerController : MonoBehaviour
 {
     public float moveSpeed = 5f;
 
     public Rigidbody2D rb;
     public Rigidbody2D platform;
     public Camera cam;
 
     Vector2 movement;
     Vector2 mousePos;
     // Update is called once per frame
     void Update()
     {
         movement.x = Input.GetAxisRaw("Horizontal");
         movement.y = Input.GetAxisRaw("Vertical");
 
         mousePos = cam.ScreenToWorldPoint(Input.mousePosition);
     }
     Vector2 pos;
     private void FixedUpdate()
     {
         pos =  pos  + movement;
         rb.MovePosition(platform.position + pos  * moveSpeed * Time.fixedDeltaTime);
         Vector2 lookDir = mousePos - rb.position;
         float angle = Mathf.Atan2(lookDir.y,lookDir.x) * Mathf.Rad2Deg - 90f;
 
         rb.rotation = angle;
     }
 }

so this is what i want to achieve. (link to imgur because im only allowed to post 2 attachments) picture

how do i make it so that the player will rotate along side the platform while still being able to move ?