How to compensate for malicious deletion of photos?

The man's behavior does constitute infringement.

Do you know this man? If you know:

You can keep a record of the photos he sent, or you can keep a record that you said you were not allowed to send. You can use computer screen capture. After you said it, he sent it back and kept it again.

Then you can sue him in court for violating your portrait right and demanding compensation. If the photo is not an art photo, but a life photo or a selfie, you can also sue him for infringing your copyright (the right to copy and the right to spread information on the Internet) and demand compensation.

If you don't know, 1 10 has a net. You can ask them if they are in charge.

If you don't care and don't want to delete the photos, you can only add a password to the album.