See a therapist if you can afford it. Have a talk with your parents and tell them what you told us. It may not help, but when they die it will comfort you to be able to tell yourself you tried. As for your friendships and other relationships don’t put energy into other people who will not put it back into you. Maybe have a talk, once. If they don’t change their behavior stop initiating contacts with them. Find new people who will initiate things with you.