The damnation of reading, studying, and learning how to question is part of why the priests et. al. were so damned determined that the Masses were kept foolish and superstitious. Limbo? Purgatory?
If you want a hoot, Annie, read https://www.toptenz.net/top-10-worst-popes-in-history.php
If you want to really understand just how evil these nutcases really were and how the pope is no different than any other man with too damned much power and influence, have at it. I like- sometimes- the current Pontiff. But hesuffers from the same absolutely commitment to the Church as did all the others, and when he does try to make changes, he is opposed by those cardinals and bishops who will do all they can to protect the cloth, the offending priest, the sacredness of secrecy and the power they all hold. In far too many ways, religion is just. Plain. Evil.