I play a couple of times a week and I’m a left handed, right sided player with a not brilliant, but improving backhand.
I play with the same people and there’s a guy who always stands directly at the net when his partner is serving to me. I’ve done a mix of returning diagonally, putting it down the side (to his backhand) and lobbing, but I’ve found that the best method to win points from that position is to aim directly at him.
Stand close to the net and don’t give yourself time to react, don’t complain if you get hit