 I'm so tired of everyone getting married and leaving me in the dust

I'm a  30 year old man living in ny, USA and I'm so fed up with fighting my panic attacks and anxiety about my singlehood and loneliness. Last year for a while, I was able to truly convince myself that I was okay being single. Then after Valentine's Day, my  sister  who is 21 years old got engaged. Another crush of mine got engaged. And I feel like there's something wrong with me, that i do have a social disability that why ever girl I talk to turns girls away.  From me Every married friend of mine keeps posting pictures of their stinking cute babies on Facebook and I feel like I'm about to lose my mind! I think I must have some kind of social disability because I think whenever I try to flirt, I get put into the small talk zone or they'll text once and never talk again to me. I have a type of guy   Im attracted to and I can't attract my own type. Not even  I do dress nice, can I  can’t attract my type of girl  I hate so much how people have to get married so early in my state that I'm terrified of dating at 30 or older. I just want to disappeared and start a new life  I do have autism  and adhd and I hate it so much  by the way, those people on my Facebook  page there just f friends, that I already know in my past and they don’t want anything to do with me. They pretty much forgot that I still have some on my Facebook page.