Can you put up a screen shot off your team and quality?, we need to see what you have!,you are right in using the flanks but I would say not with 3 narrow at the back! 3 or 4 wide is much better!, so 3w-1-4-2 or 4-1-3w-2 or 4-4-2 flat!, if you want to really attack then play 4-3w-3 or 3w-4-3!, as for lossing alot of games you must realize by changing so many player at once you will need time to find the best positions for those players!, also what age are they?, how ofton do you train them?, when do you train them?, are you and your friends watching live matches?, are you constantly changing formations?, there as so many variables that can be effecting your teams performance its a case of ilimination my friend.