Look - we all have hard times.
I was also just feeling bad after my prev app got objected to hell. But I continued on. The ranks are not what matters. Don't go makin' rash decisions, I totally agree with erin and luke here. Go chill out. MB is not a very easy rank to get, and the absolute necessity kinda shows power-hungriness. If you present something great next app, I'll be absolutely happy to vouch for you. Just - make sure to make it multiple, actually good builds.
Also, if you really feel like this place is driving you insane, please take time off and go chill out. Maybe in the meantime, try getting into something else! I've been kinda getting into art lately, I want to actually begin learning it and start, maybe, making some actually good art! I personally loved art, it's just that I never actually wanted to take the time to learn it. But at a random point I kinda got into it and I love it quite a lot now. You might wanna try something too!
Please don't go raging at us just because we've objected on your app. We can't vouch just because you're having a bad time - we're evaluating your actual building abilities.
That being said tho, I wish you the best of the best luck!