Meta Software Engineer interview questions

Recruiter call, 60 min Technical Interview, 4 hour Interview Day. No one allowed me to introduce myself. I've never had so many interviews where the person conducting it is trying to get through it ASAP. I asked one of them if they could tell me more about Meta's work environment having a people centric approach. She declined saying they just had layoffs (this was before the recent ones that went viral) so she didn't feel good about talking about the company caring for its employees. They all seemed sad or had an air of over self-importance. I didn't do well, but there was no love lost from my side. I will never want to try to work here. ever.

2 interview of 45 minutes, 1 coding - leetcode questions (edge cases, proactively looking for bugs, tradeoffs, active listening - use their hints, ask clarifying questions) (common questions: graphs, data structures, BSTs, balanced parentheses, I18N, popular recently viewed, centiaur friends, go latin, dinosaur race), 1 troubleshooting - conversational interview about how systems work end to end (scenario from on call orientation and how to solve it)