Search for their profile in Facebook search
Check whether their profile still appears in search results
Open an old Messenger chat with them
See if their name and profile picture are still visible in the chat
Try sending them a message
Check whether the message can be delivered
Visit their profile from a mutual friend’s list
See if their profile page opens or shows unavailable
Look for their comments, likes, or tags on mutual posts
Check whether their name appears as plain text instead of a clickable profile
Try tagging them in a post or comment
See if Facebook suggests their account when you type their name
Ask a mutual friend to search for their profile
Check whether their profile is visible to others but not to you
Look for signs that their account may have been deactivated instead of blocked