Restoring the Play Store on Android 4.4.2 is feasible but requires careful matching of APK versions, attention to device architecture, and awareness of security and legal implications. Using vetted sources, keeping backups, and preferring GApps packages designed for KitKat minimize risks.
Check the box for to allow installation of apps from sources other than the Play Store. Download Google Play Store Android 4.4 2
Your KitKat device may be old, but with this guide, it isn't obsolete just yet. Restoring the Play Store on Android 4