I don't see what you problem is with having conceded only 1 goal. I have noticed that you need to change how your team operates every once in a while since it seems that the longer I play in a particular way, the more opponent teams seem to be able to counter it. After changing things up, they at first still see to try to counter the previous way before readapting for the new changes. I don't know if it is a thing, but I wouldn't be surprised if it were a thing.