To be honest, I did not think to complete loses in one season to Barcelona in all direct matches from Real Madrid, but by actually losing all matches, Real Madrid shown that none of those defeats are unlucky. They were truly weaker than Barcelona in the last seasons and those defeats were well deserved.
Last season, we saw Real madrid lose all four of their matches against Barcelona. It's not that Madrid were unlucky , but that they lost. Barcelona dominated and won every match. And both Madrid's attack and defense were quite weak against barcelona.
The same thing is unlikely to happen again this season. Madrid have tried their best to strengthen their defense. At the same time , Madrid's overall performance is also quite strong. We have seen Real Madrid win all three matches this season. They have been able to perform well in every match. So, it is expected that this season's El Ccasico will be even more competitive.