If you cannot access the Play Store, you can download the official installation file (APK) directly from the source. About supported devices | WhatsApp Help Center
: Approximately 132 MB for the APK file, plus additional space for chats and media. download whatsapp for android 6.0.1
As of , WhatsApp remains fully functional and officially supported on Android 6.0.1 (Marshmallow) . While Meta regularly phases out older operating systems to focus on modern security and features, Android 6.0 remains above the current cutoff line. If you cannot access the Play Store, you