The most stable way to get Facebook on Android 4.4.2 is to use the for that OS rather than an unverified "patched" file from a random source.

This is a highly trusted repository. You can find Facebook (Android 4.4+) APKs like version 293.0.0.43.120 , which was one of the last major releases to support KitKat (API 19).

This guide explores how to find the right APK, the risks of "patched" versions, and the most reliable alternatives for older hardware. Why Seek a "Patched" Version?