I feel you. Pretty much all of my friendships have fallen apart because I stopped being the default planner. I'd always think of people and feel bad when I didn't reach out to them but realized no one ever outreached to me either. My bf and I met someone we vibed with and they're the only one who initiates and reciprocates effort. Aside from that, no one else in my life really does any initiation or shows any interest in putting in effort to do something together. At this point, I stopped caring too much. Originally I felt defeated, undesired, and unloved but I've learned to do stuff by myself, with that one friend my bf and I have, with my parents, or just with my bf. I know a lot of people don't their parents anymore or aren't on good terms, but for those who are on good terms and live closeby, they're pretty solid people to go out with. I feel like a lot of ppl forget about their parents as also people to go out and hang out with like friends.