Hey Alex, Ok so with the first serve I would say a good long aggressive push would be a good option to return as this is easier to keep low and not be out of position as well. Ince you get used to pushing this serve slightly around the side to keep it low it can be a great return.
You can of course still attack both of these serves but you do need to be quick and really work on using the legs well to lift the backspin. Also getting a relaxed wrist and good acceleration through the contact. So I would try to practice both the aggressive pushes and opening up with a lot of spin into the body of the opponent, these are the main ways I would say that you can give yourself a good chance to play a strong return.
Dan 🙂
