For Android 7.1.2 (Nougat), Google Play Store issues often stem from outdated versions of the app itself or its support service, Google Play Services
Toggle it On to allow the installation of non-market applications. Step 3: Manually Download a Compatible Play Store APK Google Play Store Apk Download Fix For Android 7.1.2
Caution: Do not download Play Store APKs from random pop-up websites. Use APKMirror (owned by Android Police) for signed, unmodified APKs. For Android 7
Clear Play Store Cache/Data: Go to Settings > Apps > Google Play Store > Storage and select both Clear Cache and Clear Data. For Android 7.1.2 (Nougat)