I've used Overdrive, now Libby, for years to check out books from my library to read on my 3rd gen Kindle paperwhite & to listen to audiobooks.
I occasionally listen to Audible books from Amazon if they're free.
I read graphic novels on my old inherited 3rd gen ipad through my library.
I occasionally get free ebooks to side load to my Kindle from Haymarket Books.
I don't. It's over 600 books long.