Generally speaking, it is difficult to recover chat messages deleted by friends without backup. Common chat software such as WeChat does not provide the function of directly recovering deleted chat records. Most third-party recovery tools claim that they can recover, but many are unreliable or even pose security risks. They may not be able to truly recover data, and may also lead to personal information leakage or fraud. In some special cases, such as when the phone has a built-in backup and recovery function and the chat records were backed up before being deleted, or the phone is in a specific after-sales repair scenario, there is a very small probability that you can try to recover through professional means, but the overall difficulty is relatively high and is limited by many factors.