App Notifications using Ringtone Volume

[Android Central Question]

I have an S9 running oreo and some notifications from some apps use the Ringtone volume slider instead of the Notifications volume slider (the apps that first come to mind are Conversations and Facebook). This is SUPER annoying because I normally keep my Ringtone volume on max and Notificatons volume off. Can this be somehow manually set? And if not, is there an app that can do this instead?

 

[Neera42]

Same here, especially Facebook is annoying the hell out of me. I do want push notifications, but either silent or correctly tied to the notification volume...

Does anyone have a workaround?