If your device did not come with Google services pre-installed (common for "portable" handhelds or Fire tablets), follow these steps: Install Playstore on Android 8.1.0 - PINE64 Forum
Go to Settings > Security > Unknown Sources → Toggle ON for your browser or file manager. google play store apk for android 810 portable
Select the browser you will use (like ) and toggle on Allow from this source . Where to Download the APK If your device did not come with Google