each to its own like others said above, for me it is or was instagram, user engagement is better than anywhere, better than on facebook, if you manage to keep your accs alive, ig still can be king
with that said, not always the biggest/most popular networks are the best, because it's true that those have the most traffic, but most of the time those have the strictest security too, so you can easily end up making more money on a lesser known site with less security/easier acc managing