It's a bit more complicated than that...
Those projections are so dependent on assumptions about fertility in specific countries that a range of only 2 billion is massively understating the uncertainty, and your worldometer is frankly just a scare tool - it's certainly not a credible way of representing a complex picture.somewhere between 9-11 billion by 2100.
There's a wealth of information at the UN site: https://population.un.org/wpp/Publications/. Just to take one example of a country often portrayed as "a massive problem", here's the projections for the Chinese population:
It's striking, incidentally, that the People's Bank of China (the Chinese equivalent of the Bank of England) was one of the first signatories of the Network for the Greening of the Financial System. (https://www.banque-france.fr/sites/default/files/media/2019/04/17/synthese_ngfs-2019_-_17042019_0.pdf)
Simply by increasing the rate of development of a few large African countries, which all the evidence ever collected shows results in smaller families, we can reduce the earth's population quite quickly.
And I wouldn't worry about the influence of the Pope. There's no evidence at all that enough people listen to the official Catholic teaching on birth control to make a difference to population.