Are you loosing most matches, conceding lost of goals, or is it that you dominate most matches but when the opponent finally gets a chnace, they seem to score from it every time ?
Apart from this information, remember to tell us under what circumstances this happends, like if you are playing an agressive attakcing football, if you sit back and hold possession, what kind of formation you use, the quality of your team versus the quality of the opponents etc etc.