Adding / Changing Nickname
In communication World, particularly, in the Google accounts, if you are not willing to give your full name, instead you may give your nickname. Nickname is often a shortened name of a person or thing which is used in place of their real name.
For the safety purposes, in your Google account profile, you can provide and enter your display name as a combination of your full name and nickname.
Command Line
Setting icon > Samsung Accounts > Profile Info > Nickname > Add Your Nickname > Add > Done
