Review your friends list to see if the person you suspect has blocked you is missing.

Let’s find out which of these possibilities is true.

On the Facebook website, choose the search bar in the top-left corner.

Opening the friends list on the Facebook website.

key in in the person’s name and press return.

Facebook will display profiles with matching names.

Instead, they may have blocked you, or their account might no longer exist.

Pointing to the magnifying glass used for searching on Facebook.

So, you should investigate the matter further.

Checking that can help you find their account.

In this case, you cannot confirm the username change from your profile.

This person is unavailable on Messenger error in the Facebook Messenger.

They can then verify whether the username has been changed or whether they encounter the same error.

Next, expand the “Your Facebook Activity” menu.

If you recall commenting or reacting to their posts, tap “Manage Comments and Reactions.”

Opening the settings on Facebook app.

From there, locate the post of the user you interacted with.

See if you’ve got the option to find their profile with a different username.

Should You Reach Out to the Person Who Has Unfriended or Blocked You?

Checking the comments reactions and posts from the Facebook’s activity log.

Instead, you cansend them a friend request.

If they mistakenly unfriended you, they may see your request and accept it.

However, if they don’t accept your request, it suggests they unfriended you for a specific reason.

If you find that the person has blocked you, respect their decision and avoid contacting them.

Facebook won’t act on appeals sent on behalf of friends.