Well, there isn’t one, and given that the largest, least secure social network in the history of time elects to exploit people’s emotions in the most flagrant fashion imaginable and with negligible acceptance of culpability whenever a cataclysmic breach of privacy occurs, there isn’t likely to be one in the infinite future.
Honestly, what decent creature would submit themselves to to a network of toxic echo chambers populated by less and less tolerant ego-maniacs who ban anyone and everyone for daring to hold a slightly different opinion than their own? It’s almost as bad as politics.