After you make these changes, strangers can’t see you on Facebook or send you messages.
Facebook’s privacy tweaks can be found in one place.
SelectSee more privacy prefs.

Adjust the parameters to your liking.
Some elements of your Facebook profile are always public, such as your profile photo and background photo.
Who Can See Your Future Posts?

This setting allows you to determine who can see your posts.
It’s not retroactive, so it only applies to posts from this point forward.
Next toWho can see your future posts, selectEdit.

In the drop-down menu, chooseFriends.
Now only people you’re friends with on Facebook can see your posts.
To finish, selectClose.

Next toLimit the audience for posts you’ve shared with friends of friends or Public,selectLimit Past Posts.
ChooseLimit Past Postsagain to confirm.
Depending on how Aunt Martha has her privacy set up, it could be her friends or anyone online.

These people can select your name to go to your profile.
This setting helps you remove these tags and links.
Next toReview all your posts and things you’re tagged in, selectUse Activity Log.

On the left side, next toActivity Log, selectFilter.
Who Can Send You Friend Requests?
This category has only one setting, but it’s an important one.

Instead, use these steps.
Next toWho can send you friend requests, selectEdit.
In the drop-down menu, selectFriends of friends.

Who Can Look You Up?
Three options help you determine who can find you on Facebook.
Next toWho can look you up using the email address you provided, selectEdit.

In the drop-down list, selectFriendsorOnly me.
Next toWho can look you up using the phone number you provided, selectEdit.
In the drop-down list, selectFriendsorOnly me.

Next toDo you want search engines outside of Facebook to link to your profile, selectEdit.
Deselect (uncheck)Allow search engines outside of Facebook to link to your profile.
Block Specific Individuals
Changing these privacy options should prevent strangers from seeing your Facebook profile.

They also can’t send you messages or video calls.
The block feature doesn’t apply to groups, apps, or games that both of you belong to.
On your Facebook home page, in the upper-right corner, select thedown arrow.

In the left section, selectBlocking.
In theBlock userssection, in theBlock usersfield, enter the person’s name.
You may be presented with several options of people with that name to choose from.

The behaviors include:
How to Report Someone on Facebook
Here’s how to do it.
On your Facebook home page, in the upper-right corner, selectMessages.
ChooseSee All in Messenger.

In the upper-left corner, go for the gear icon and then chooseReport a Problem.
UnderWhat happened, explain the situation.
If you have a screenshot of the threatening message, upload the screenshot.
Or, selectInclude a screenshot with my reportto automatically screenshot the screen you’re currently on.
FAQ
Youcan’t see who views your Facebook profile.
Facebook holds on to confidential data very closely.
Third-party apps also can’t provide this functionality.
If you come across an app that claims to offer this ability, like report the app."
you could onlyadd music to your Facebook profilein the Facebook mobile app.
Swipe until you seeMusic, and then select it.
Select theplussign (+) to add a song.
Choose the song you want to pin and selectMore(three dots) >Pin to Profile.
In the app, selectMore(three dots) nearAdd Story>View as.
You’ll see how your profile appears to non-friends.