Meta Senior Software Engineer interview questions

I applied through LinkedIn and got a call by HR within a couple of days. Was called for 1st round of onsite interview. It didn't go great but I qualified for the 2nd round which consisted of four interview...two rounds of pure coding, one round of system design, and one round of behavioral plus small coding interview. I didn't do very well in one or more of these and didn't get the offer.

I had a very bad interview experience with Facebook Seattle recently. Two days after the interview, they called me and asked for references and told me they would provide the feedback in the next day. Not happening but after 5 days, they told me I did not have an offer but I can apply again in 3 months because there are some bugs in my codes and also in the design question interview, although I answered all the questions right but I did not push through it.