Question player !pointing and !rotating at mouse position(2DGame)

Hello everyone, here is a basic script for the charakter-Player of my Top-Down-2DGame, and after different experiment I still haven´t been able to let the player rotate in the direction of the mouseCursor., although shooting is actually working. Player is actually rotating around WorldCenter, or not rotating at all!

I am actually using the new InputSystem(ActionType = value; ControlType = Delta; BindingPath = Delta(mouse).
The Camera.Main has a Virtualmachine, following the Player( just as info)

Could you maybe take a look at this. Would me happy to know if I am mistaking something in the script:
_________________________________________________________THANKYOU!
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.InputSystem;


public class Player : MonoBehaviour
{
public float speed = 10f;

[SerializeField] private float maxHealth = 10f;

private float currentHealth;

public Camera cam;

private Rigidbody2D rb;

Vector2 mousePos;
Vector2 lookDir;

private bool canAttack = true;
public GameObject sword;
private SwordDamage swordDamage;

public InputActionReference movementAction;
public InputActionReference lookAtPointer;
public InputActionReference swordAttackAction;
public InputActionAsset inputActions;

public Image healthBar;

public Vector2 Direction { get; private set; } = Vector2.right;

private void Awake()
{
rb = GetComponent<Rigidbody2D>();

inputActions.Enable();

currentHealth = maxHealth;

swordDamage = sword.GetComponentInChildren<SwordDamage>();
}

private void Update()
{
mousePos = Input.mousePosition;
mousePos = Camera.main.ScreenToWorldPoint(lookAtPointer.action.ReadValue<Vector2>());

}

void FixedUpdate()
{
var movementVector = movementAction.action.ReadValue<Vector2>();

if (movementVector.magnitude > 0)//return the lenght of this Vector
Direction = movementVector.normalized;

rb.MovePosition(rb.position + movementVector * speed * Time.deltaTime);
Vector2 lookDir = (mousePos - rb.position).normalized;

float angle = Mathf.Atan2(lookDir.y, lookDir.x) * Mathf.Rad2Deg - 90f;
rb.rotation = angle;

if (canAttack && swordAttackAction.action.triggered)
{
swordDamage.PerformAttack();
}
}

 

Code (CSharp):

1. using System;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5. using UnityEngine.UI;
6. using UnityEngine.InputSystem;
7.  
8.  
9. public class PlayerVampire : MonoBehaviour
10. {
11.     public float speed = 10f;
12.     [SerializeField] private float maxHealth = 10f;
13.     private float currentHealth;
14.  
15.     public Camera cam;
16.    
17.     private Rigidbody2D rb;
18.  
19.     Vector2 mousePos;
20.     Vector2 lookDir;
21.  
22.     private bool canAttack = true;
23.     public GameObject sword;
24.     private SwordDamage swordDamage;
25.  
26.     public InputActionReference movementAction;
27.     public InputActionReference lookAtPointer;
28.     public InputActionReference swordAttackAction;
29.     public InputActionAsset inputActions;
30.  
31.     public Image healthBar;
32.  
33.     public Vector2 Direction { get; private set; } = Vector2.right;
34.  
35.     private void Awake()
36.     {
37.         rb = GetComponent<Rigidbody2D>();
38.  
39.         inputActions.Enable();
40.  
41.         currentHealth = maxHealth;
42.  
43.         swordDamage = sword.GetComponentInChildren<SwordDamage>();
44.     }
45.  
46.     private void Update()
47.     {
48.         Debug.Log("yes,Update works!");
49.         mousePos = Input.mousePosition;
50.         mousePos = Camera.main.ScreenToWorldPoint(lookAtPointer.action.ReadValue<Vector2>());
51.         Debug.Log("Oh, my godness a mice!");
52.     }
53.  
54.     void FixedUpdate()
55.     {
56.         var movementVector = movementAction.action.ReadValue<Vector2>();
57.         //transform.Translate(movementVector * speed * Time.deltaTime);
58.  
59.         //Das ist für den Abfeüern vom Projectile _I_ vom playerPosition aus
60.         if (movementVector.magnitude > 0)//return the lenght of this Vector
61.             Direction = movementVector.normalized;
62.  
63.         rb.MovePosition(rb.position + movementVector * speed * Time.deltaTime);
64.         Vector2 lookDir = (mousePos - rb.position).normalized;
65.         Debug.DrawRay(rb.position, lookDir, Color.red);
66.         float angle = Mathf.Atan2(lookDir.y, lookDir.x) * Mathf.Rad2Deg - 90f;
67.         rb.rotation = angle;
68.  
69.         if (canAttack && swordAttackAction.action.triggered)
70.         {
71.             Debug.Log("Fire2 Pressed");
72.             swordDamage.PerformAttack();
73.         }
74.     }
75.  
76.     public void TakeDamage(float damage)
77.     {
78.         currentHealth -= damage;
79.         healthBar.fillAmount = Math.Clamp(currentHealth / maxHealth, 0, 1);
80.  
81.         if (currentHealth <= 0)
82.             Debug.Log("YouAreDead");
83.     }
84. }

 

thank to you, now it´s much clearer