ref: https://geekeasier.com/extract-apk-file-of-android-app-without-root/4769/
adb devices, this is to check whether your devices is connected or notadb shell pm list packages, this lists down all the packages name. Select whatever package name you want to extract.adb shell pm path package-name, selects the package you want to extract, this will give you the full path of the package, copy it down in the next step.adb pull /data/app/package-path desired/path, extracts the package to the desired specified location.