Global birth rates are currently in a serious state; even Africa, our last bastion, is seeing a massive plunge in fertility rates

‌Has The World Already Dropped Below Replacement Fertility Rate? New Analysis Suggests We're Having Fewer Babies Than Ever – Even In The Places We Least Expected | IFLScience
Looking at this article, the situation is even more serious than current statistics suggest; it mentions that the global fertility rate might actually already be lower than the replacement level (2.1). The most core reason cited is that Africa's fertility rate has been overestimated.
As urbanization progresses, economic power grows, and women's rights improve across the African continent, fertility rates are plummeting dramatically.
Countries with more than 5 children per woman, similar to Korea in the 1960s, are limited to a very small number of places like Niger, and even those are in steep decline.