If you don’t know How To Make Facebook Private then below are the steps to make your profile private:-
1. The first step is to login to your Facebook profile.
2. Then click on the profile picture in the top right corner.
3. Now go to settings and privacy.
4. Then click on settings bar.
5. Now scroll down to the audience and visibility section and click on profile locking.
6. Then finally click on Lock your profile.