The elephant in the room here is that the academic job market is not an aberration but a leading indicator.
Almost all of the other middle class professions, the "Plan B" jobs, are also oversubscribed. (There are a few exceptions like medicine, fields with governing bodies that have long maintained an artificial scarcity.) Dropouts from the academic job market will have to complete with a glut of unemployed workers who already have specific training for and/or practical experience in the Plan B workplace.
This is so depressing. I have no idea what the hell to do with myself. No wonder people contemplate putting their heads in the oven . . .
From what you've posted elsewhere I can see how this would be extremely upsetting but I also hope that your good sense of yourself and your own value can surface and that you can find a way to improvise yourself into a workable situation, wherever it is.
If you are feeling as depressed as your last sentence suggests, I also hope you have a way to get some counseling help as well. Your job or lack of one should not be the index by which you value yourself; support through the decision-making period can really help with that.