Look for Facebook Version 100.0 through 150.0 . Versions released around 2016–2017 are typically the last ones to maintain 32-bit compatibility for iOS 9.
IPA files are packages that contain an iOS application, including its executable code, resources, and configuration files. IPA files are used to distribute iOS apps outside of the App Store, either through third-party sources or by developers to test and debug their apps. facebook+ipa+for+ios+935+best
Recommend that run Facebook better on iOS 9 Look for Facebook Version 100