feeling alone

I have been going through a hard time recently with my dad just passing away but now it seems when I need them the most my friends are leaving me. Only 3 of my friends know about my dad but 1 one of them I barely talk to anymore.  The other I'm not that close with anymore and I don't know if I completely trust her with the previous issues we've had. The third I talk to almost everyday but I feel disconnected from her and that I can't really talk to her. I tried talking to her about how lonely I felt and she completely ignored me and just said she was tired. I feel so alone and I have no one to talk to. I'm constantly sad and I don’t want to be this way. A lot of family stuff has been going on as well and I don't think I'm ok. I just want things to get better but it just feels like I'm going to be alone.