For firefox, youtube and facebook?
and others like d2jsp, etc


Windows 10 notifications that is

Does no one google anymore?

firefox
https://www.ghacks.net/2018/10/08/firefox-gets-native-windows-10-notifications-support/

youtube
https://videocreators.com/enable-desktop-notifications-youtube-activity-🔔/

Facebook
https://www.facebook.com/help/1973275909564900?helpref=popular_topics

For mobile I mean google that I use none of these services personally.

Checked the facebook link, isn't correct... i go into notifications and there is no "Desktop and mobile"

Once again I use none of these sites nor would I ever care that much for push notifications.
Fact is if 2 of them works and I spent 1 min googling them I'm sure if you spent 5mins you'd find a solution.