For example, Pokemon Go 0.57.2 was available on apkmirror.com for 4, 5 hours now, but still it is not on Google Play.
Is there any way to get it from official source sooner? I mostly trust apkmirror.com, but say, what if somebody hacked into apkmirror (which I assume will be less secure than Google Play Store) and target a country in the world and serve a modified apk, or target some IP, then it will be not secure.