Hi rko,
Yes sidespin loops are something that many people find difficult, we’ll make a video on it for you within the next couple of video releases.
For now to help you return those sidespin shots some quick tips are to firstly wait for the ball and really focus on moving your feet into position before playing the shot so you are close to the ball. Also when you play the ball try to put plenty of topspin on your shot, this will help counter act the sidespin already on the ball.
Hope those help for now until we can create the video for you!