Finding a can be challenging, as the official app has long dropped support for this older operating system. However, for users relying on older devices, finding a stable, older version is essential for maintaining connectivity without requiring a hardware upgrade.
Since the standard Facebook app is too heavy for KitKat, users have better luck with these alternatives: facebook apk for android 444 high quality
Once the APK file has been downloaded:
Recap of the high-quality solution: