This may be an option for the right person/situation.
Newer Samsung phones have a Samsung app called "Secure folder" found on the app drawer. After you create a PW, it can only be accessed with that PW. The app functions like a second separate phone with no
co-mingling. You have apps inside this app like internet browsing, camera, photo gallery, contacts etc. (You can add any other app too) Anything done or saved stays in the "Secure folder" app. For example if you use the camera app in the Secure folder app to take a pic, the pic is stored in the photo gallery app in the Secure folder and not the photo gallery that you normally use. There are 2 separate photo galleries now. Every action done in the Secure folder app, stays in the app. Your web browsing, contacts you add, activity will only be seen when in the app. I also put my burner app here. (That will ring normally unless you
mute it)
Its quite cool. You can put names, notes, numbers etc and they remain private. You can also changer the name of "secure folder" app to make it less conspicuous. It makes sense once you see it. I'm not a computer geek and I figured it out.