Can’t download Facebook
If you want to download Facebook,there is information that you should update your IOS device.
iPhone 6, iOS 12
Hello~ You will not be able to download Facebook on an iPhone that is running iOS 12+. You need a device that can run a higher version of iOS. It requires 13.4 or higher and your device cannot run iOS 13 at all. Get a newer iPhone.
~Katana-San~