Not having a season with bad games, because if Real Madrid are still in second place in the La Liga standings and also still get to the quarter-finals in the Champions League, they are also only left behind with an aggregate of 1-0 in the Copa del Rey. With results like that, Real Madrid cannot be said to be a team that has played badly this season. lol!
The reason I said failure doesn't mean that Real Madrid is bad this season, because Real Madrid always gets a trophy and or a title every season. So if Real Madrid doesn't achieve anything this season, then this can be said to be a failure to win trophies and titles, but I still think Real Madrid has done well and not bad.
The Copa Del Rey is still an opportunity for Real Madrid even though we know this season Barcelona has beaten Real Madrid a lot than usual but anything can turn around and maybe Real Madrid will win and bring another trophy in the Copa Del Rey and the champions league.
I know you mean maybe because every season brings trophies if this season doesn't bring any trophies it's a failure of the coach because he doesn't bring better than before but I think it's normal that every season there is a different cycle and it still deserves Real Madrid as a challenger any title it's just that they still have a long way to go to win a trophy this season.