Python, problem sending push notifications to phone with Google Firebase without Android App

[murattasci06]

The code is here:

https://stackoverflow.com/questions/75870903/python-problem-sending-push-notifications-to-phone-with...

The code prints a message that the file has been sent successfully, but there is no notification on my phone. How can I solve this problem? This notification and file are not reaching my phone? I don't understand where this notification is going.

When the code runs, a file comes to the https://console.firebase.google.com/ >>storage section, but a link and explanation do not come to the notification window of my phone. Does it require a separate setting?

Or is it not possible to send a notification with an icon to the notification window of the android phone with firebase without an android application relationship? If so which GCP (Google Cloud Platform) application should we use to send push notifications?