A crisis can be called a situation when a team of the level of Real Madrid cannot win a single title [...]
In part you are right, because if Real were an ordinary team, you could simply forget about the results. But damn it Real'M is no ordinary team, (and now the pattern of failures outside the limits of their own league is clearly visible). I'm not sure what the matter is, but apparently Real is focusing on the skill of the players and not on the age. Since the average age of Real players is close to 30, and with such a composition, it is impossible to keep a high pace of the game for a long time. 
Teams at the level of Real Madrid really should get a trophy, so when they fail to get it they will be labeled as a failed team. Their failure last season was due to their lack of consistency, when many of their players were injured, Zidane insisted to fight in two competitions (La Liga and Champions League). Instead of getting the title, they failed in both competitions. In my opinion, if they only focus on one competition, then their chances of getting the title will be greater.
@abhiseshakana Zidane doesn’t have great man management skills, and that’s what forced Bale out of the club and had he worked with him then we would have seen a different result. Also partially I blame Hazard as he’s a liability at the club, and he’s done it again by reporting over weight at the club, and if Madrid want to win title now then they need to buy some quality player’s before the transfer window shuts.
Sources:
https://www.dailystar.co.uk/sport/football/hazard-real-madrid-ancelotti-fitness-24634192
https://tribuna.com/en/news/realmadrid-2020-09-18-no-one-likes-him-zinedine-zidanes-relationship-with-his-players-called-into-question/