Firebase push notificarion when app is closed

Hi. I need help.
Im using capacitor and firebase to send push notifications.
I ffollowed the docs However the notifications are received only if the app is open. If the app is closed nothing arrives.
I found this topic

But i dont know where the json is.
I send notification through the firebase console.

Someone knows how to receive notification when app is closed using firebase console?

Im using only android