Well i can help you out i hope...
Go in esf
click on Filter
SELECT ESF IN THE RIGHT
now also select ARE RUNNING GAME
and that is the only one you need to select in that left list...
Now leave that screen en click UPDATE
Now you should find about 50 ESF servers (sometimes it are 60 but most of the time its hangs arround the 50)
Good luck and i bet i will see you once in esf only that i dont know that you are the one i helped out hehe
((if i let you see every corner of the map with melee and my name in ESF is Mark than you found me))