I received a text message this morning but can't find it. Where is it?

Hi

The  Delete and recover messages on your iPhone or iPad resource you're posting from has the best information on how to recover a lost or deleted message on your device. Keep in mind that if you and the sender is using iOS 16 they do have a limited amount of time to edit or unsend the iMessage. This feature is not available to for text messages. You can learn more here:

"Unsend a message

You can undo a recently sent message for up to two minutes after sending it.

Touch and hold the message bubble, then tap Undo Send.

A note confirming that you unsent the message appears in both conversation transcripts: yours and your recipient’s.

If the person you’re messaging is using a device with iOS 16 or later, iPadOS 16 or later, or macOS Ventura, unsending removes the message from their device.

If the person you’re messaging is using a device with iOS 15.6 or earlier, iPadOS 15.6 or earlier, macOS 12 or earlier, or is using SMS, the original message remains in the conversation. When you unsend a message, you’re notified that the recipient may still see the original message in the message transcript"

Here's the full resource: Unsend and edit messages on iPhone

Take care.