If they were not backed up to the cloud (google drive or something) or to your computer, your only chance is to run a recovery software but that needs the phone to be rooted. There are plenty of recovery apps in the app store to try.
If they were not backed up to the cloud (google drive or something) or to your computer, your only chance is to run a recovery software but that needs the phone to be rooted. There are plenty of recovery apps in the app store to try.