Open APKPure. It will ask for permissions—grant them. Because you are on Android 4.2.2, you may see a notification that "APKPure cannot verify the app's identity." This is a legacy Android warning; as long as you downloaded the official version, you are safe.
: APKPure is not an official app store. Apps downloaded from it may be modified, contain malware, or lack proper encryption and signature verification compared to the Google Play Store. apkpure for android 422 verified
You will see "WhatsApp Gold" or "Instagram Pro." These are never verified. Modded APKs inherently break the signature verification process. On Android 4.2.2, they are almost guaranteed to contain ransomware. Open APKPure
This guide covers how to safely find, download, and install APK files for Android 4.2.2 using APKPure, with a specific focus on ensuring the files are verified and compatible with your device. : APKPure is not an official app store
Run an antivirus scan on your device after installing new apps.