How to hide these features on facebook?

[QMUSN]

You can do that exactly through facebook security settings. HOWEVER, people can still find you even if you are private if you have a mutual friend.

Example: my profile is completely private, however, if someone goes on my husbands facebook friend list and searches for me, they can then find me. But they can not find me just by typing my name into the search bar.

you can't hide your profile photo but if you go to privacy settings you can say the only people that see specific things are on your friends list only.