I don't see the option to recover deleted messages
I have an iphone 7 plus. I don't see the option to recover deleted messages when I select the edit button
The option that you are referring to is one of the new features of iOS 16 and iOS 16.1.
Unfortunately, an iPhone 7 Plus is not capable of handling the high demands of iOS 16, so you are likely using iOS 15.7 or 15.7.1, which does not have an option to recover deleted messages.
Sorry, but the messages that you have deleted are gone.