Falling into the Abyss of Loneliness

been feeling like I'm falling into an abyss of loneliness, I haven't been able to make any meaningful connections, I have no friends, every one, therapists, sponsor, family only tells me it will get better, but instead it's been getting progressively worse over the last year since my breakup, just work and home, at a low paying job feeling like my life is passing me by while everyone is living thier best life where ever I go, even my own daughter is distant now that she's entering early teenage years. then when I do manage to make an effort to socialize, I get such awful debilitating social anxiety. feeling like a numb void of existence, rather invisible by everyone especially my own family who doesn't sympathize with any thing, so I just exist among them, quite and in pain and that horrifying realization that I could very well be a nobody in my life atm. I feel like I've lost my identity, even getting up and doing anything extracurricular like going to the gym requires extra effort.