How to slide when i change direction of my 2dcharacter

I want that my character slide a little before i change direction how can i solve that? i tried also with AddForce() but i read that is better to use velocity for character controller and i'm a noob so velocity is easier

   void MovementAnimation()
     {
         float move = Input.GetAxis("Horizontal");
         anim.SetFloat("Speed", Mathf.Abs(move));
         rb.velocity = new Vector2(move * maxSpeed, rb.velocity.y);
         Flip(move);
 
     }