Where can I find my old text

You can find them if you're running iOS 16 or up via recently deleted messages:

For iOS 16, see these instructions on how to do that

1. In the Messages conversation list, do one of the following:

• • Tap Edit in the top-left corner, then tap Show Recently Deleted.
  • Tap Filters in the top-left corner, then tap Recently Deleted.

1. If you’re in a conversation, tap  to return to the conversation list.
2. Select the conversations whose messages you want to restore, then tap Recover.
3. Tap Recover Messages.