Why does everyone keep abandoning me?

I've met alot of people over my lifetime, and yet once thing still remains the same. I'm alone, just like always. I can never keep anyone around. This goes for people I meet both in person and online, and its starting to really get to me, and I'm beating myself up over it. I will get to know someone a little, talk to them, laugh, have a good time, then I'm just ghosted. Every single time, without fail. Doesn't matter how close I think I am with someone, I will end up being abandoned regardless. I would like to think I'm kind, somewhat funny, and okay to be around, but this fact tells me otherwise, and it hurts, alot.

I have got to be the problem here, but I don't know where I'm going wrong. I try so hard just to be acceptable and have people who want me to be around, but thats just never the case. I'm the only thing that is consistent in all these scenarios, throughout my entire life. I've lost everyone I know, since everyone just throws me away and never talks to me again. All friends, all acquaintances, all family.

I think I'm just doomed. Destined to be alone no matter what, and nothing I ever do will ever change that for the better. I am so close to just calling it quits on life. Putting the gun to my head. I dont have anyone to say goodbye to, to thank them for being around, no one to tell them that I love and care about them. I've lost everyone and that seems to be what is going to continue to happen for the rest of my life, I've given up all hope, it's way to consistent to just be a coincidence.

:(