Using Google Trends or keyword analysis tools, one can observe a recurring pattern. Whenever an older classic is re-telecast on TV or a famous scene goes viral on Instagram Reels, searches for "Movie Name + Filmyzilla" spike.
Because users have been conditioned to believe that adding a piracy site's name to a search query yields the specific file format they want (usually MKV or MP4 in a small size). This is known as a navigational search intent gone wrong. They aren't searching for information about the movie; they are searching for a file. Chalte Chalte Filmyzilla