Lefty v Lefty strategy

Good afternoon from Peru. I would like to know how to take advantage of my left hand against other rivals who are also left-handed. It happens that I go to a table tennis workshop for people with disabilities; I am the only one who uses a wheelchair and the others have mental retardation in different degrees. Only one of them is left-handed and with him we always have interesting games. At that moment I realized that I have serious weaknesses to respond to the right side of my field, which has brought me many problems in decisive moments. I would like you to help me solve this problem that always happens.

Thank you for your answer!

Pablo honores