Why do I not get any notification sounds on messenger when everything is switched on

Have you made sure the app is up to date? (How to manually update apps on your Apple device - Apple Support)

You should also check if notification sounds are turned on within the app: tap the three lines at the top left > 'Notifications and sounds'.

Does this help?

Hi there chrissiestarr,

Let's continue by checking to be sure notifications are turned on for Messenger in Settings > Notifications. Learn more here: Use notifications on your iPhone or iPad - Apple Support

Also, let's be sure you've checked the App Store for any updates for the Messenger app and installed them if available: How to manually update apps on your Apple device - Apple Support

If the issue persists, and you've ensured your iPhone and the app are both updated and notifications are turned on, reaching out to the app developer is the next best step since they're best-equipped to support the features of the app they created. This link will help you get started: How to contact an app developer - Apple Support

Take care.

Hello chrissiestarr,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with notification sounds. Have you tried restarting your iPhone? This simple step resolves a multitude of issues: Restart your iPhone - Apple Support

"How to restart your iPhone X, 11, 12, 13, or later

Press and hold either volume button and the side button until the power-off slider appears.

Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.

To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo."

If that doesn't resolve the issue, does your iPhone need updating? Do you have a recent backup for the data in your iPhone in iCloud or your computer? If not, we recommend that you create one as described here: How to back up your iPhone, iPad, and iPod touch - Apple Support

Then update your iOS as outlined here:  Update your iPhone or iPad - Apple Support

We hope this helps.

Cheers!