Meta Software Engineer interview questions

Since I had interviewed on-site before, they directly brought me on-site this time. I had 4 interviews: 1 behavior, 2 coding and 1 design. I have 12 years experience. All interviews went well in my mind, but surprisingly, no offer. No feedback given. I feel it was because one of the interviewers wasn't that nice and was quiet through most of the interview. While I wrote on the whiteboard and talked out loud, he was mostly on his laptop and barely responded. They tell you to think of the interviews as a discussion with a coworker. Well it was definitely not an engaging or pleasant coworker at all. Makes you wonder if the interviewer decided your fate as soon as he met you because he didn't like you. I have launched many successful products with many customers. None of that is taken into account in this kind of hiring process.

One phone interview, a data structures based question, but the interviewer walks you through plenty of examples and is super patient and explains everything. Afterwards the interviewer will give you time to ask questions even if it goes over the time they are very open to talking about projects and experiences