Use the following trick if you find an objective that is difficult to reach. Before the upcoming match, save the game. When you see the tasks for the next match that you cannot pass, quit the mode, reload it, and the objectives will change to one you want. For example, if you are striker having trouble dealing with being in an offside position (and that is not even being called by the referee) less than eight times, just quit the mode and reload it again. Then, it may change to "Commit less than 4 fouls" or "Score at least one goal". However your team objectives such as "Concede less than 5 corners" or "Stay scoreless by the 80th minute" will also change.