I’m Catholic. Our mass has 1/2 the people it had 10-15 years ago. Very few young people unless they are dragged in by their parents.
My uncle is Methodist. Their church went from 300-400 people down to 40-50 and those are mainly 70+ years old.
Yet you have mega churches popping up everywhere and thriving.
I think people are getting away from denominational religion.
And many have turned "worshiping" services into yet other versions of a Broadway Show.