You installed an APK with higher API requirements. Fix: Downgrade to Play Store version 30.2.xx or lower.
: Use reputable sites like APKMirror or Uptodown to find version 7.1.12 or later compatible with Android 7.1+.
Disclaimer: Downloading APKs from third-party sources carries inherent risk. Always verify file signatures (SHA-256) against official Google releases when possible. This guide is for educational purposes.