Version 293.0.0.43.120 is generally cited as one of the last stable releases to support Android 4.4 (KitKat).
Android 4.4.4 was a milestone in mobile operating systems, known for its efficiency on lower-end devices. However, modern apps have evolved to require newer APIs, more RAM, and more powerful processors. The current Facebook app is designed for modern versions of Android, often resulting in "package installer" errors or severe lag when forced onto a KitKat device. Why "High Quality" Matters facebook apk for android 444 high quality
Initially, after 30 minutes of browsing, the app may slow down. Use the trick or restart the app. For 512MB devices, definitely use Facebook Lite instead. Version 293