https://www.apkmirror.com/apk/google-inc/photos/photos-5-8-0-328056511-release/google-photos-5-8-0-328056511-2-android-apk-download/
Just downloaded the Google Photos 5.8.0.328056511 (arm64-v8a) (480-640dpi) (Android 5.0+) APK from @APKMirror