How can I prevent my game object from rotating all the time when trying to move it

So, I have a game object (my player) that moves through the joystick. Without the spinning code below, my player moves well and smoothly, but after I put the spinning code below the game object, it rotates all the time (360 degrees) when I try to move it.

My goal is to rotate the player around a specific angle as the player turns.

void Update()
{
    // move
    _rigidbody.MovePosition(transform.position + (transform.forward * leftController.GetTouchPosition.y * Time.deltaTime * speedMovements) +
        (transform.right * leftController.GetTouchPosition.x * Time.deltaTime * speedMovements) );

    //rotate 
    double rad = Mathf.Atan2(leftController.GetTouchPosition.y, leftController.GetTouchPosition.x); // In radians
    double deg = rad * (180 / System.Math.PI);
    transform.RotateAround(transform.position, Vector3.up * Time.deltaTime, (float) deg);
}