Hello and congrats on your new device iphone13bluetooth,
We can see your iPhone isn't finding your Alexa devices.
Let's see if this helps: If you can’t connect a Bluetooth accessory to your iPhone, iPad or iPod touch. If this doesn't help with Alexa, it will help with other devices.
Check this out: Play Apple Music with Alexa. This should help if you're using Apple Music and there is even a section under "Get help" that has a link to Amazon help. If you haven't already, get the app: Amazon Alexa on the App Store.
We're hoping this helps!