[100interviews]

Your experience is not uncommon. A former coworker of mine has a few relevant posts/talks on this:

My recent job search adventures:

https://medium.com/@arctansusan/my-adventures-in-job-searchi...

Rants and Ruminations From A Job Applicant After 100 CS Job Interviews in Silicon Valley

https://www.youtube.com/watch?v=uzz5AaCWMps