In the Champions League, Real Madrid, in addition to luck, also has the support of the referee, because this team often plays as champions, so in some controversial issues they get an advantage, even as it was in the cancelled penalty of Alvarez, in my opinion it is stupid to cancel such a penalty... So in order to beat Real Madrid, you need to be not only stronger than them. You also need to take into account other circumstances that can affect the result and in the case of Real Madrid, it is not only luck.
Seriously. Nobody will view it the way you did. Sometimes the action in which the ref uses some matches makes people think he supports the other opponents that they see win the match at the moment. Nobody will think about the other way around and how the match went. However, I observe one thing about Real Madrid this season: even as they are not in their best form, they are managing to win many of their matches in the Champions League.
Should I say lucky, or do they struggle to win the matches? But all I know is that they have been trying so hard to see that they succeed in the Champions League competition. However, everything that has been done can’t be undone. Whether the ref was in favour of any mentioned team, there is nothing to do about that.