Not all books use all types of front and back matter, aside from the Title Page, Copyright Page, and Table of Contents (which is required for ePubs to function). Authors typically pick and choose what pages to include in the front and back matter to suit their own preferences or the needs of their book.
If you're not sure what to include, Kindlepreneur has a great breakdown of the typical information you might find in a book's Front or Back Matter in this tutorial: https://kindlepreneur.com/parts-of-a-book/