When an app is connected to the realme notification system, the system will create two channels for it: the default channel and the silent channel. You can set the notification channels for your apps according to the app's importance.
How to view app notification channels:
Long-press the app icon > App info > Manage notifications > Default channel /System silent channel
Default channel
When an app sends a message through the default channel, the content provided by the app is of high importance, and will be displayed in the important area of the status bar, and will remind you according to the system setting status (ringtone, vibration, etc.).
System silent channel
Silent notifications will not be shown on the lock screen or in the status bar, and you will not be alerted by them. You can view them only in the notification drawer.