I'm not affiliated with them, but it seems like paying for a one time consultation/mock interview through https://interviewing.io/ might help uncover something useful.

It does suck that you have to pay to hear the "other side" i.e. a sort of "Honesty as a Service"...

Also, for what it's worth, feel free to reach out (email in profile). I haven't interviewed millions of people, but maybe I can help. And it's always more fun to commiserate with someone.