Trying to rotate my character to the position of my touch on mobile

I want my character to rotate to the position I touch on my screen. I want to be able to drag 360 degreees around it so it rotates in all direction. I also want to make sure when I move my joystick it does not change the direction the character is looking in. this is what I have for joystick movement: public Rigidbody2D rb; public float moveSpeed = 5f;

 public Joystick joystick;
 Vector2 movement;
 Vector2 mousePos;
 public float rotSpeed = 20f;

 private void Start()
 {
     mousePos = transform.position;
 }

 // Update is called once per frame
 void Update()
 {
     
     movement.x = joystick.Horizontal ;
     movement.y = joystick.Vertical;

     
 }

 


 void FixedUpdate()
 {
     rb.MovePosition(rb.position + movement * moveSpeed * Time.fixedDeltaTime);

     
 }