I'm sorry to hear that happened to you and yet it's a great opportunity to highlight the benefits of self-deleting messages. Specifically it's elevates the cost of an attacker being able to comb through a vast ream of documents to weaponize your seemingly 'private' communications. Though self-deleting messages (such as on Signal) can't prevent the recipient from logging all communications as the come over the wire, it does prevent an attacker from weaponizing them retrospectively.