You need a version of WhatsApp that was built for older Android architectures. You won't want the absolute latest version (v2.23+), as it may fail to launch on KitKat. Instead, look for a stable build from mid-2022 or early 2023.

: WhatsApp versions have a built-in "expiration date" and will force you to update to continue using the service. 3. How to Install an APK (If you choose to proceed)

: Some browsers on Android 4.4.2 can still access basic web versions of services, though WhatsApp Web typically requires a modern browser and a primary phone already running the app.