Shake problem when colliding to walls Top Down (via MousePos)

Hi! so im am making a simple game about a triangle that moves via keyboard and rotates the angle so that is follows the mouse. But when i collide into walls it shakes and i don't like it.. Here s the code and the video. code : public class playerMovement : MonoBehaviour { public float movementSpeed = 10f;

     public Rigidbody2D rb;
     public Camera cam;
 
     Vector2 movementPos;
     Vector2 mousePos;
 
     //input
     void Update()
     {
         movementPos.x = Input.GetAxisRaw("Horizontal");
         movementPos.y = Input.GetAxisRaw("Vertical");
 
         mousePos = cam.ScreenToWorldPoint(Input.mousePosition);
     }
 
     //movement
     private void FixedUpdate()
     {
         rb.MovePosition(rb.position + movementPos * movementSpeed * Time.fixedDeltaTime);
 
         Vector2 lookDir = mousePos - rb.position;
         float angle = Mathf.Atan2(lookDir.y, lookDir.x) * Mathf.Rad2Deg - 90f;
         rb.rotation = angle;
     }
 }

and video:video link