Arm passing through objects (Rotation - Rigidbody2D)

Hi. I have made a small game where you are supposed to move the Player with a Pickaxe, but my rotation on the arm and Pickaxe is passing through the wall (The Player is doing fine - I guess its because of the Rigidbody2D)

The problem is if I add a rigidbody2D to the Arm object it behaves on its own and is not a part of the Player (affected by gravity and shit etc.)

Here is a video of the problem link text

Here are pictures of Player01

And a picture of the Arm property

I feel like I have tried everything, but I don't know how to achieve proper collision with the Pickaxe and arm due to them not being able to have a Rigidbody2D

The code of the Arm Rotation

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
  
 public class ArmRotation01 : MonoBehaviour {
  
     float eulerMinRot = -70f;
     float eulerMaxRot = 70f;
     Vector3 currentEuler;
  
     float rotationSpeed = 80f;
     float rotation;
     float myRotation;
     bool facingRight;
  
     PlayerController01 playerController01Script;
  
     private void Awake()
     {
         playerController01Script = GameObject.FindObjectOfType<PlayerController01>();
     }
  
     // Update is called once per frame
     void Update () {
  
         rotation = Mathf.Clamp(rotation, eulerMinRot, eulerMaxRot);
  
         if(Input.GetKey(KeyCode.W))
         {
             rotation += rotationSpeed * Time.deltaTime;
         }
  
         if(Input.GetKey(KeyCode.S))
         {
             rotation -= rotationSpeed * Time.deltaTime;
         }
  
         transform.rotation = Quaternion.Euler(new Vector3(currentEuler.x, currentEuler.y, rotation));
     }
  
     private void LateUpdate()
     {
         //If the player is not facing right i would like to reverse the rotation so the that the arm and pickaxe doesnt go from + rotation on the z axis to - rotation on the z axis
         if(playerController01Script.facingRight == false)
         transform.rotation = Quaternion.Euler(new Vector3(currentEuler.x, currentEuler.y, -rotation));
     }
 }