Feeling lost and lonely

Lately, I feel like even among the few friends I have, my words and actions have lost value and I feel like none of them take me seriously anymore. I don't know if it's something I did or something else. Feeling really lonely these days. I wonder why if it's because I trust people too easily and expect the same sort of trust from them. But more often than not, I get ridiculed behind my back. I don't really understand how social interaction works I suppose. End of monologue.