I'm Slowly Giving Up On Life

I'm a 30 year old female who is jobless, not married, no bf and no friends. There's no one I can talk to and open up about what I'm going through. It wasn't like that always. I had nice jobs (some jobs I switched for a better ones and some I was laid off from) I had friends but slowly they all went on with their lives never looking back and checking up on me. I thought I had control over my life and will get back on it really quick but days went by and it's been 5 months now of me being jobless when I look around I see people of my age acting like real adults with real life and responsibilities. I used to be a resilient person but now I kind of don't want to do anything at all. Over the past year or so I started losing touch with reality. I don't feel like pushing forward any further if it's always gonna end up in disappointment. I pretend I'm ok living alone but the truth is I'm not. I wake up every morning trying to do something different something meaningful but lately I've been so devastated by the happenings in my life (being laid off, not having a partner) that I no longer can force myself into discipline. When I see people having nice jobs and loving life partners and experiencing life in a beautiful way I fall into this pit further. I really don't know what to do But I know one thing there's a shame attached to my age (of me being 30 and still clueless while someone in their late 20s doing way better than me) It's me letting my younger self down (I've always been a high achiever in academic but now suck irl) Idk if anyone has anything to say that would help me out of this