When we look at the situation, I think Atletico Madrid's chance of winning the championship has decreased. There is currently a four-point difference between them and the leader Barcelona and Barcelona has one less match. If Barcelona wins its missing match, the point difference will decrease by seven points. Therefore, Atletico Madrid will not have to lose any of its matches from now on. However, we see that they are losing points even in the matches they are the favorites.
The four points gap is the main problem Atletico Madrid have now, they need extra work if they wants to emerge as the champions of Laliga this season even though it is slightly impossible because of the form both Madrid and Barcelona are recently.
For Atletico Madrid to win the laliga, they need to win all their matches and expect both Madrid and Barcelona to keep dropping points.
There is a slight chance for Atletico Madrid; they are almost done with their tough matches, they can defeat all their remaining opponents in laliga, and they are not in the Champions League anymore, so they will have enough time to focus on Laliga since both Madrid and Barcelona have Champions League matches to play and they also have to play the second leg El-Classico which one of them have to drop points. If too much matches affected any other performances, Atletico Madrid can capitalize on that if they keep winning their matches from now.