Lonely (vent)

I’m 22 and I always been a homebody and never really had more than five friends, I’m just a very anxious person but I’m not shy. I often wonder if I’m the reason why my friendships don’t last or if I find myself in bad friendships in general. I’m used to being alone but lately the loneliness has consumed me. My only real best friend was my sister who is a year younger than me (she’s 21 I’m 22) but she has completely ditched and ignored me for three months now, she has been following the wrong crowd and the more I try to advise her the more she’s mean so I have stopped. I feel like I don’t connect with anyone, no friends no family and I’m trying not to let it get to me but it does make me extremely sad. I just feel very alone. I’m new to this app so if I post this in the wrong section I am sorry.