No. This method works on unrooted devices. Root is only needed if you want to replace the system Play Store permanently.
Before proceeding, enable Unknown Sources: google play store apk download for android 712 exclusive
Some developers mirror official Play Store APKs. Look for google-play-store-apk repos with high stars. Move the APK to your device’s Downloads folder
On rooted 7.1.2 devices:
adb shell
su
pm install -r /sdcard/downloads/app.apk
Move the APK to your device’s Downloads folder. google play store apk download for android 712 exclusive