I too am facing numerous rejections and offers from jobs that turn out not worth taking. so I'm still at a job that isn't the best for me. my advice take a break from the job search, focus on being a good employee at your current job. I mean let the job search leave your brain for a couple weeks. than go back with fresh eyes.

just advice take it or leave it. but breaks have really been helping me. I too have days I just want to quit. but I also have days I find good things about my current job, things I like.

I think your desperation may be showing through to the potential employees. or how frazzled you are or something. deep breathes, meditate, come up with a ideal job list, let the universe deliver, than know nothing is perfect. practice gratitude.