If you want, I can:
For Android 8.1.0, the safest option is (owned by Illogical Robot LLC, a trusted name in Android). They sign APKs with the same cryptographic keys as Google. google play store apk for android 810 link
Yes, but note that Go Edition devices have limited RAM. Use the “Go” variant of the Play Store if available (it’s lighter). If you want, I can: For Android 8