There is nothing like that mate, No Referees helped Real Madrid at any point, the var is there for reviews. you are talking with sentiment it seems you are barca fan. when you see a club that is doing well hail them, Real Madrid is the king of Champions league, they know how to win in champions league, they own this trophy, and when they play you can see how they play like their life depend on it. We see them doing wonders at a die minutes on several occasions with any manipulations. Can you say is Referee that help them to score in a die minutes in several years, or the come back they have repeated season in season out. Its just luck and master, Real Madrid has mastered the games in champions league, no team can so superior like them in years to come. lets give them the respect they deserve without sentiment.
As someone who is neither Barcelona fan, nor Real Madrid fan (not Spanish) I could say we have seen historically when both teams were helped. I have seen plenty of times, even during VAR times, where Real Madrid had someone protecting them, it has always been way too obvious.
They can step on a foot and get away with it, they can stop a sure goal and get only a yellow card, those type of little stuff. Sure they do not score from offside and counted, sure they do not do something obvious, but what should be a yellow card, could go off with a warning, what should be red card, could be a yellow card, what should be a foul, could be continue, those little bit by bit moves ends up helping them get the title in the end.