I'm trying to send through Firebase to send messages, but nothing is happening

I'm trying to send through Firebase to send messages, but nothing is happening.Here's why
` FirebaseMessaging com...le.firebase.example.messaging W Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
2025-02-01 16:30:13.953 621-674 ProcessStats pid-621 W Tracking association SourceState{4ed4fb8 com.google.firebase.example.messaging/10190 Service #3921} whose proc state 8 is better than process ProcessState{d23c41a com.google.android.adservices.api/10186 pkg=com.google.android.adservices.api} proc state 10 (1 skipped)
2025-02-01 16:30:13.957 621-944 ActivityManager pid-621 D sync unfroze 1616 com.google.android.gms for 6
2025-02-01 16:30:13.962 1616-1616 BoundBrokerSvc pid-1616 D onBind: Intent { act=com.google.android.gms.semanticlocationhistory.deidentifieddata.storevisits.StoreVisitsProcessingService.ACTION_TASK_READY dat=chimera-action:/... cmp=com.google.android.gms/.chimera.GmsInternalBoundBrokerService }
2025-02-01 16:30:13.962 1616-1616 BoundBrokerSvc pid-1616 D Loading bound service for intent: Intent { act=com.google.android.gms.semanticlocationhistory.deidentifieddata.storevisits.StoreVisitsProcessingService.ACTION_TASK_READY dat=chimera-action:/... cmp=com.google.android.gms/.chimera.GmsInternalBoundBrokerService }
2025-02-01 16:30:13.969 5789-5891 FirebaseMessaging dem.corp.androidmessenger W Notification Channel set in AndroidManifest.xml has not been created by the app. Default value will be used.`

Start by reproducing the messaging failure and review the AndroidManifest.xml notification-channel metadata referenced in the logs. Confirm whether the app creates the declared notification channel and whether a message reaches the device; the report does not provide source files, tests, or enough detail to define a complete fix.

Written by the indexing model from the issue text.