Atletico Madrid are currently at the top of the La Liga standings because Barcelona have not played a match in week 26 but I think it will not be a big problem as long as the points difference between the two is small so that it is possible for a shift to occur at any time.
Atletico Madrid's victory over Bilbao is quite important to maintain Atletico Madrid's chances in the title race and also shows the true quality of Atletico Madrid which is very strong this season.
And this week there was a big surprise, namely Real Madrid's defeat to Real Betis, this was something unexpected before because Real Madrid played with their main squad but they failed to show their best performance and I think this defeat makes Real Madrid's percentage to win the title this season even smaller.
Real Madrid had a few tough games in a row, but it still doesn't justify their defeat, Ancelotti didn't make a big rotation for this match, but it didn't help them. I didn't think Real Madrid would lose this game, they couldn't lose points, because Atletico Madrid had already taken advantage of it and Barcelona could do the same today. For Real Madrid, both games in La Liga and in the Champions League are very important, I think that losing two games in a row is rare for Real Madrid.