Meta Product Manager interview questions

Got approached from internal recruiter via Linkedin. The first interview was a phone interview with the recruiter asking typical HR related questions to gauge my interest. Followed with a half-day onsite (had the option to do via video call but I preferred not to) having 2 one hour interviews with product managers. The first interview was with 2 product managers (one of the them mostly listening in) and the second interview was with 1 product manager. Questions were typical whiteboarding, what-if product related scenarios which I enjoyed. I think I did fairly well although I was ill at the day having slept very little so I underperformed and I felt there were areas I could have done better in. I left feeling 70% positive I would move to the next stage. I waited for a couple of weeks to hear back but I never did so after following up with the recruiter a few times, he told me that they wouldn't proceed further and it took long for him to get back to me because it was 'close'! I had asked to receive further feedback and I never did. The recruiter never called me back (even if we tried to schedule time) and additionally when I asked 'well can you at least give me a few feedback points via email' I received nothing. Really negative experience which I didn't expect from a company like Facebook