If push comes to shove, there are a couple of free programs on the Internet that will allow you to view the directory structure and files on iOS devices. A certain degree of caution is advised when using these programs because of the unproven sources and possibility of introducing computer viruses. But you will be able to see all the files on your device and copy whatever you want to a PC or Mac. A Google search will bring them up.
I have used a program that is rather confusingly called Windows Explorer. It isn't the Microsoft one! I'm not recommending it, but it worked for me.