Argent

Why not? You would need to ask Apple. This is primarily a user-to-user support forum; other Apple users like you.

Also, you may want to consider using a lock screen passcode if you are concerned about someone finding your phone and seeing things in it. Use a passcode with your iPhone, iPad, or iPod touch - Apple Support

There is no option to delete but the following may help: Hide purchases from the App Store - Apple Support