Flip Player when change direction

 void Update()
    {
        targetVelocity = new Vector2(Input.GetAxis("Horizontal") * maxSpeed, 0);

        if (Input.GetButtonDown("Jump") && grounded)
        {
            velocity.y = jumpPower;
        }

        //flip the player if moving left or right
        if(targetVelocity.x < -.01)
        {
            transform.localScale = new Vector2(-1, 1);
        }
        else if(targetVelocity.x > .01)
        {
            transform.localScale = new Vector2(1, 1);
        }
    }