Actually I think real madrid do not show much interest in wining their league, moreover I think they are much interested in wining the champions league this season because their performance in their previous match against real betis was not impressive at all
Losing to Real Betis and dropping to 3rd position in the Spanish La Liga standings as well as trailing league leaders Barcelona by 3 points isn't enough reason for you to think that Real Madrid aren't interested in winning the Spanish La Liga title this season. Real Madrid manager Carlo Ancelotti's expression at full time in that game should tell you he wasn't happy with that result but had to accept it. Real Madrid are very much interested in retaining the league title this season if you ask me and I think they'll continue fighting for till the end of the season.
No team is playing in any competition for fun, but to win the title which is the focus of every club. This season is filled with a lot of challenges and uncertainties for Madrid, and I believe that they will overcome it. Madrid will meet with Atletico this week, and that's quite a big match for them. They need to improve their performance, because Atletico is very dangerous.