catholic countries are actually more religious now
In South America and Africa, somewhat maybe depending on the country and what you’re comparing to (current day America maybe, Middle Ages catholicism definitely not).
In Western Europe, L. M. F. A. O. I don’t think there’s a single catholic (or formerly catholic, now secular) country in Europe that comes close to being as religious as the US, by any useful metric.
Within Europe we can try to compare Catholicism vs Protestantism, but let’s be real, most of these guys were murdered, converted, or sailed off to the new world centuries ago.