Backups and device activity often become the key to retrieving deleted messages that were accidentally deleted. The Android messaging apps save deleted messages temporarily so that they can be easily restored. When that is not possible, the backup of Google accounts can be used to recover messages by restoring the previous state of the phone. Even deleted parts of messages in the internal storage can be found by a recovery application, in particular when the phone has not added any new data since deletion. I hope this has answered your question of how to get back deleted messages. To know more, you can read here: https://datarecovee.com/how-to-retrieve-deleted-text-messages-on-android/