I won all the leagues I played so far and hard opponents can make things easier, the worst is when you have weak opponents and one very good team to compete with, you will fight from day one to the last one with the same opponent.

5,6 stars opponents this season but seems easier then last one or at least same and actually 2nd is kinda one of the weakest not sure how he manage to win almost every single game so far.

Champions League is basic harder because only winners and teams from top 4 can join, there's a higher rating of good teams to be there but I guess is also about luck and more things.

Last seasons Champions League is killing me and make it almost impossible to win it because I have +1 opponents and mostly are league winners, so many teams with 7 and 8 stars players, even 9 stars from time to time and that trophy is almost impossible for me.