Alone and lonely

I have friends but the thing about me is I don’t want people knowing my business. I don’t trust people and I know how girls are. I want to be able to talk to someone about my troubles. I know I need a therapist to talk to, but that isn’t a choice right now. I wish I just had someone, to express me feelings to. I’m so deeply sad and confused and stressed.. I already tried messaging friends. Of course, no reply because no one actually cares to talk to me. I can go weeks without someone checking in on me, or telling me they have no time to hang out but then post pictures with other girls.. I always feel like the last choice. I tried downloading apps to talk to strangers, just to conversate and be able to vent without feeling like I’m being judged but there’s no app for that that’s free. I just feel so helpless