Google Application-Engineer interview questions

It lasts for about 3 weeks. I am lucky to get the phone interview without having an OA. But I failed at the onsite interview. It was really unlucky. I have 2 remote interviews out of 4 during the onsite interview. For the first remote interview, I don't even have a laptop to work on and the interview couldn't see my handwriting clearly through the camera. It was not a difficult problem but I was so nervous for being writing and rewriting to fix the font size all the time. The third one is a remote too. And it's apparently the interviewer didn't get in the room on time or some mistake happens. So they find someone else at home to interview me. I'm watching his bedroom all the time during the interview. But anyway I think I solve the problem at least but I didn't have much left for the follow-up.