Hi! I'd make sure that you don't have Do Not Disturb turned on.
When you have a Do Not Disturb turned on, a crescent moon icon appears in the status bar and on your Lock Screen. To turn on Do Not Disturb, follow the steps below for your software version.
Not sure which version of iOS or iPadOS you have? Go to Settings > General > About and look under Software Version.
Turn on Do Not Disturb with iOS 15 and iPadOS 15
- Go to Settings and tap Focus.
- Tap Do Not Disturb.
- Select your custom options for notifications.
To turn on Do Not Disturb from Control Center:
- Open Control Center on your iPhone or iPod touch, or on your iPad.
- Tap Focus, then tap Do Not Disturb.
Learn more about Focus and customizing your Do Not Disturb features.