Atletico Madrid is indeed the main competitor between Barcelona and Real Madrid. They (Real Madrid and Barcelona) are always in the shadow of Atletico Madrid. Once they make a data error, it is not impossible that Atletico Madrid will take over their position in the standings. It's just that they are one step behind the two clubs, but their potential to bring them down is very high.
Atletico also has a good chance this season in La Liga. we know how Atletico performs in competitions like the Champions League.
when their chances are still big in La Liga I think Atletico can focus on chasing Madrid and Barca. but when the situation of Madrid and Barca is not overtaken, I believe Atletico will focus more on other competitions.
Well they just aren't lucky enough when trying to get something they want. Several times they had to accept the fact that they had to give up the desired trophy because they had to lose to compete. The goddess of luck is very far from them, so they are difficult to get to. But their hard work should get them to where they want to be.