Why can’t Siri shut down my phone when I ask her to?

Hey Deramoney,

Thanks for using Apple Support Communities. If Siri isn't working for other requests too, reset Siri to see if fresh settings help to resolve this. Here's how: If "Hey Siri" isn't working on your iPhone - Apple Support

Set up Siri to recognize your voice

1. Go to Settings.

2. Tap Siri & Search.

3. Turn off Listen for "Hey Siri," then turn it back on.

4. When the Set Up "Hey Siri" screen appears, tap Continue.

5. Say each command that you see on your screen.

6. Tap Done.

In addition to those steps, make sure your iPhone is updated as updates can help by installing bug fixes and security updates. If an update is needed, back up first. Here's a guide with both steps, just in case: Update your iPhone or iPad - Apple Support

Let us know how it goes.

Take care!