To handle a fast and spinny forehand loop from an opponent, first, position yourself quickly to anticipate the ball's trajectory and adjust your stance accordingly. Adopt a low and balanced posture, and prepare to absorb the spin by using a slightly closed racket angle. As the ball approaches, focus on timing your swing to make contact at the peak of the bounce, allowing you to both control the ball and redirect its momentum. Utilize a short, compact stroke to counter the speed while adding your own spin, aiming for an angle that targets wide to the opponent's backhand or a deep corner to disrupt their rhythm. Lastly, maintain your eye on the ball and be ready to reposition for their next shot, keeping your footwork agile.