Retrieving text messages
Can I retrieve text messages on my iPhone 11
Can I retrieve text messages on my iPhone 11
See the following from Delete and recover messages on your iPhone or iPad - Apple Support
Retrieve a deleted message or conversation
You need iOS 16, iPadOS 16.1, or later to recover deleted messages and conversations. You can only recover messages and conversations that you deleted within the last 30 to 40 days.
See the following from Delete and recover messages on your iPhone or iPad - Apple Support
Retrieve a deleted message or conversation
You need iOS 16, iPadOS 16.1, or later to recover deleted messages and conversations. You can only recover messages and conversations that you deleted within the last 30 to 40 days.
If the phone is running iOS 16, check this link...
Recovering deleted texts and iMessages - Apple Community
If that doesn't help, you are probably out of luck unless you included the messages in a recent back-up of the device.
Retrieving text messages