There was an older thread here: https://forum.xda-developers.com/fir...ooted-t3574088 that updated info from here http://www.aftvnews.com/how-to-insta...-without-root/ but both are outdated at least for the apps I am using. Also, they did not list the source for their working version for when the tutorial gets dated.
Only two steps are required.
1. Go to source website (they do not have an app) and search Google Play Store for ANDROID TV. Ensure you download the version that explicitly states (Android TV) in the title. The ones that were not titled did not work even though the description said for Android TV.
2. On the same website search and download Google Play Services for Android TV
That is it. No need to download anything else, no need to log in, or even click the apps you downloaded. Since the website does not have an app, it won't auto update but hopefully, your apps do not require a constantly updated store.