If you've got a Samsung phone, you should know that there's a really easy way to keep a safe folder on your phone, a folder that only you can access and that's really great and useful to save anything you don't want anyone else to see. Samsung Secure Folder creates a private encrypted directory on your phone, a separate space that adds that extra security and privacy layer that you're looking for.
How to use Samsung Secure Folder
Moving files to that folder is as easy as pressing the "send to folder" button or importing files straight from the interface using the option to add files. Then you can block the access by means of a PIN number that only you know, a lock pattern, a password or even biometric systems. Contacts, videos, photos, messages... Anything that you want to keep private can be saved in this folder.
It's a service based on your Samsung account and it's compatible with the brand's most modern handsets. However, it's important that you make sure that you've got a backup of all those files just in case something bad were to happen and you were to end up losing them.