Find who blocked or unfriended me - Computers & Internet

To know who unfriended you: go to their profiles and see if the "add" option is being shown. If this is the case is because the person unfriended you.

If you can no longer retrieve their profiles is because they either closed their accounts or blocked you.

You need to click on friend who you want to unfriend after that click on friends it will unfriend after click

go here and what this to see who blocked you:
How To Know If Someone Blocked or Unfriended You on Facebook

create another account or check from one of your's friend account, if you see the person you can't see from your profile that means that person blocked you

How do I unfriend or remove a friend? To unfriend someone:

1. Go to that person's profile
2. Hover over the Friends button at the top of their profile
3. Select Unfriend

Note: If you choose to unfriend someone, you'll be removed from that person's friends list as well. If you want to be friends with this person again, you'll need to send a new friend request.

Hover over their name or photo on your timeline, wait for dropdown, hover over "Friends" or "Following", wait for pop-up menu, select unfriend. Alternately, click on their name to go to their timeline, find "Friends" near top banner, hover and select unfriend. Blocking and reporting is another option, although unnecessary in most cases.

You need to click on friend who you want to unfriend after that click on friends it will unfriend after click Welcome to Facebook Log In Sign Up or Learn More

Go to your friends window an hover above the said person you want to unfriend, an x will appear in the upper right corner. You may also block a person from messaging you again besides unfriending them.