How it works
A friend in person: you see their face, you hear their voice, and your family knows them too.
A game friend can be fun, but you only ever know a game friend through the game.
A name, a picture and an age online can be made up. Most people in games just want to play, but you cannot tell which ones.
Keep the chat in the game, and tell a grown-up if a game friend asks for more.