Third-party APKs may be modified to include spyware, adware, or credential stealers. Unlike the official Play Store (which is updated via secure system partition), sideloaded APKs run with full app permissions.
Playing Without Paying: Detecting Vulnerable In-App Billing Implementations in Android Apps Authors: S. Poeplau, et al. Published: 2014 google play store for android 422 apk
You do not need root access to install a Play Store APK. Avoid websites that claim you must root your phone just to update the store app. Third-party APKs may be modified to include spyware,
Android 4.2.2 (Jelly Bean) is old (released in 2013). If you’re running a device on Android 4.2.2 and need a compatible Google Play Store APK, here’s a practical, concise guide: what it is, risks, how to get and install a compatible APK, and troubleshooting. Poeplau, et al
Android 4.2–4.3 Jelly Bean (API Level 17)