I'm sorry you are feeling so...uh... lost? (I don't know if that is the right word.)

I can relate to quite a bit of what you wrote, in particular the part about removing people on Facebook. I've never been on Facebook myself. But this is my second time here on PC. It was going on 3 years ago now I just became disillusioned with the internet in general. So I dumped every internet site I was on including PC.
I'm a pretty reclusive person, both in real life & on-line. So, when I did come back onto the internet, PC was the only place I came back to. And it's the only site I frequent now, with the exception that I do have a YouTube channel I use just as a place to access music videos I enjoy listening to mostly while I'm replying to posts here on PC.

Oh... & I also have a Masters degree... which is another whole sorry tale in-&-of itself.

It never did much of anything for me either.
Anyway... I didn't really have any advice or suggestions to offer you here. I mostly just wanted to let you know I read your post... & I wish you well. Here are links to a couple of articles, from PsychCentral's archives on the subject of what to do if you feel lost or empty:
https://psychcentral.com/blog/when-you-feel-lost/
https://psychcentral.com/blog/when-y...-what-to-do-2/
My best wishes to you. Please keep posting!