Backstory:

Interviewing with a FANG company that you will definitely guess the name of in 5 seconds, blah blah blah, did the first 5 virtual on-sites they went pretty well, HC asked for 2 more, fine whatever.

I do the first one, it goes well, and then the second interviewer was completely checked out from the process. He pasted in a prompt that I had to format because it was just one giant string, was clearly in other windows in his browser and not listening to any of my questions (which led to me solve the wrong problem for about 25 minutes) and then a loud burst of sound blares from his speakers and I look over to see him quickly shutting a window in his browser and uh that was it, it was over. For whatever reason I couldn't mentally recover. I could already tell this guy clearly didn't give a shit, and then the fact that he gave so little of a shit that he was watching youtube in the middle of my extra interview they made me do just sapped whatever momentum/motivation I had to the point where I was fighting back tears and I am extremely not a crier. As in, never. Perhaps it was the realization that I was going to be just another body ground up in the gears of the beyond f'ed up interview process machinery. Doesn't matter now though, obviously.

So my question is: what the heck do I do? I want to say something to my recruiter, but I don't want to seem like I'm preemptively slinging accusations to deflect from my poor performance, but also my INTERVIEWER WAS ON FUGGIN YOUTUBE.

Serious replies and commiseration only please.