[quantum_nerd]

While I do agree with the OP that the tech hiring process "might" be broken, I noticed a pattern in his interviews: it seems to me like a self-fulfilling prophecy. From the get go, he already considered the interviewers as enemies and went in with a mindset that they are out to get him. That wouldn't probably help calm those nervous nerves, neither would it show your prospective coworkers that you are someone they would enjoy working with(which is a fundamental part of the interview, I believe).

I have actually noticed that most tech companies(at least they ones I've had to deal with, namely Facebook, Google, Amazon, and Microsoft) are doing all they can to take the guess work out of interviews with training sessions, resources, etc...

All the OP needs is to change his attitude from cynical to optimistic and I promise, things will change for him.

Also, BFS (and DFS) are as basic as you can get with algorithms. Either of them is not longer than 10 lines of codes; just remember that BFS uses a Queue and DFS a Stack...