I just wanna vent tbh but how do I deal with this?

I have a pretty normal life. Too normal. Tedious actually. I never cared before but as time passed I started to notice that I have no social life. I have very few close friends and probably just a handful of casual friends that prolly don't care whether I live or die. I thought maybe it's because I was a bad person that's why not many strangers wanna be my friends, so I tried so hard to behave in a way that I deem suitable, changing every slightest thing I feel might be of a terrible trait. Still nothing budged. People still don't wanna my friends. Never had any romantical connection either, people just don't approach me I don't know why. it's eating me alive each passing second. I wonder how do I get people to wanna be my friends? Even the existing friends don't care about me. I have posted many things signaling my declining mental state but nobody cares, the most they did was reacted on those posts. Nobody reaches out to me. I came back in town. The friend who is here visiting their home and the one who has never left town knew about me being in the same city as them but they didn't bother to invite me to hang out at all and I can see in their story that they were hanging out tgt. I'm always outside looking in. I'm always there for them but nobody cares when I'm dying inside. Nobody cares no matter how much I try to insinuate my pain or trying to get their attention. I have always reached out to friends who I sensed are not doing good, mentally. But who reached out to me? Nobody. I'm tired of being forgotten. I'm tired of always being in a one-sided friendship. im tired feeling like I have a void in my life that could not be fulfilled and will never be fullfilled by anything. I'm tired of suffering when nobody cares about me. I just want everything to go quiet. What should I do. I don't know how I should deal with this. Why don't people wanna be my friends? I behave like I'm walking on eggshells everyday but why do people still don't like me. Please be nice

I just wanna vent tbh but how do I deal with this?
Post Opinion