You use many to indicate that you are talking about a large number of people or things. I don't think many people would argue with that. Not many films are made in Finland.

Understanding the Context

Do you keep many books and papers and memorabilia? "Many" describes a large quantity of countable items or people, commonly used when the exact total isn't important or known. It is one of the most essential quantifiers in the English language, appearing in casual conversations, literature, news, and speeches.