That search result has nothing to do with you, but is most likely an innocent person's FB account. I highly urge you to drop your crusade, and do not attempt to close that FB account on suspicion only. That profile has not made threats against you, so hands off.
Have you ever heard of a similar situation?
Yes, from another member who was obsessed and believed that a video must exist, even though he never saw it and the person never said they recorded anything. He used "wrong search methods" and found someone with his last name, but not the first, and another result was part of his last name but not spelled correctly in full. He insisted that this "proved his video existed," even when we tried to explain why the results showed videos but were not even his name and the links no longer existed besides that. We ended up telling him to seek professional help for his anxiety issues, as he sure was not scammed, and we deal with scams, not psychological issues. His account was deactivated after we told him not to post any more about his non-scam.
I suggest you move on and seek professional help for your anxiety. We cannot help you to purge these self-inflicted thoughts of doom from your head other than having you read what others have done to get over their scam and suggest you try some of the methods that they used, even though you were not scammed yourself. And I will repeat again not to post about your experience with that person here, as they were not a scammer.