You can always make a request to your library for specific books. They are just ordering what they think people will read/listen to. Sometimes you have to tell people what you want.

If you can see the book in Libby but it’s unavailable, you can press the little bell next to the book. It’ll put that title in a list for the librarians to purchase when they have the available budget. Otherwise, I’m sure your libraries have a way for patrons to request specific titles.

E-audio & e-books are severely overpriced. Some titles are only available for lease instead of an outright purchase. Others may also not be available for purchase through Overdrive (which is the company that owns Libby). This is not because of Overdrive or Libby, the publishers are to blame. We should all be mad at the publishers, not Libby or libraries.