Real Madrid's defense is actually good it's just that some newly recruited players cannot play when they lose to PSG and a number of other players are injured. This is what makes it difficult for Xabi Alonso to face PSG because there are no players who are in the best quality or experienced to be placed in that position.
Not only the weak defense position on Real Madrid for now, but the middle position is also very good when the players receive the ball and make the bait ahead. So that Real Madrid was truly slaughtered by PSG and it was not solely because of a bad defense, but the attack built by Real Madrid was also very bad so that Real Madrid really could not score in the match against PSG. So Madrid have to make a more perfect improvement before starting next season because if the way to play is like that, it will certainly be difficult for Madrid to win.