6 years ago I got rejected from every grad school program I applied for, and also couldn't find a job in the industry I wanted (biotech). After a very long 2 years of unemployment or low wage jobs I threw my hands up and became an English teacher in China. Was the best experience of my life and I was way more employable when I came back, partly because of the experience and partly that I made an app for my students when I was there. You'll find a way for it to work out; the hardest part is managing your own emotions, but you're far from alone in your situation.
I can relate and I was actually doing the same thing about 9years ago. I was more lucky as I had a job in biotech and wanted to go back to grad school but got rejection after rejection. I was so frustrated that I took anything (Bad PhD lab not the topic I wanted etc) and ended up hating grad school. Left it - for good. Studied another topic (tech) went down a different career path. Today I am more than happy and get chased weekly by headhunters.
My take away: It is a journey. Don’t be affraid to push for what you believe in and I can say that as I applied to more than 500jobs in the last 10 years… But I am now down to narrowing a handful applications with nearly 80-90percent success rate (Sr Manager and Director level positions).