This boost in revenue is the result of lockdown in 2020-2021.
The accurate generated revenue is yet to be confirmed as register work and calculations are still ongoing. As android phones have become more and more cheaper many people had started using Facebook.
The growth of the company has been tremendous in the past few years.
Online interaction such as studying, shopping, etc., has given the digital world a massive push, which gave huge benefits to companies like Google and Facebook.