How can I let apps use their default notification sound on Moto G5 I have a Moto G5 S, Android 7.1.1, and all (messaging?) apps are using a really annoying notification sound (the one that came by default in the phone). I would prefer that each app uses their default notification sound (like WhatsApp's whistle or Facebook's... thing). Is there a way I can set that for all apps?
As said earlier you cannot choose a custom notification sound for each app, however you can change the notification sound for all apps.

Go into Settings > Sound > Default notification ringtone > choose whichever ringtone you like