of course I am aware of them, but they certainly weren't like your local public library where virtually anyone can check out a book and take it home. The average person could not make use of those libraries because they couldn't read. Books were not available to the average person because they were hand written and extraordinarily expensive. The major libraries, of course had books, documents and such, but if you lived in say Bethlehem, you had to either walk or ride a donkey to wherever the library was....then you might be able to actually hold a book and perhaps, if you were one of the very few literate people from there, obtain some knowledge from it.
Catholics live in a delusional world. Jesus chose lowly fishermen and even they could read and write.