Real Madrid very rarely loses in the Champions League final, if one expects Real Madrid to fail to win the title, then don't let them reach the final. Real Madrid can almost always be guaranteed to win the Champions League title every time they are in the final, it is not a coincidence or luck, but a tradition that we often see as a reality.
But can Real Madrid still be beaten? Of course you can, but it's really hard to expect them to lose in the final stages. The Europa League Final and the FA Cup Final teach us something, that not all favorites can win.
Real Madrid is different from the rest, it's been a long time they record defeats in the UEFA Champions League final and they have nothing to bother about other than planning for moving forward because they're the best. However this season is a different one based on the witnessed results. I've watched the Europa League, the FA Cup final and the results become shocking. The club's the majority anticipated to win end up losing.