That unfortunately doesn't mean they are valuable. Many domains are taken, registered, and sat dormant, don't take the fact that someone registered it as a sign someone else will buy it from them
Are any of those other names in use, or just parked somewhere?
I don't see much value in yours I'm afraid, as while it's very short and sweet, it doesn't really carry a potential brand name, especially with the "F". Sure some new funky restaurant opening up somewhere might like it, but the chances are slim, even slimmer for them to find the name, and not like another of the many available.
I hope you sell it, but I do think you'll struggle to sell to be honest.