However, if Real Madrid fails in the Copa del Rey then it looks like this season will be a season of failure for Real Madrid who has the chance not to win any trophies this season. But yes, because Real Madrid is king, then of course Real Madrid will still be the favorites to win the title, whether in the Copa del Rey or in the Champions League but at this moment not with La Liga.
It's not a failure if a team fails to win a trophy in a season. Madrid is actually having a bad playing season but it is often said that
not everyday is a Christmas. There won't be joy in watching football if one team keeps dominating over the other teams season in and season out. Madrid however still has a chance in UCL despite their bad form, winning over Chelsea will not be that difficult for them.