Yes I agree with your opinion.Barcelona is trying to play more focused games now.Because in UEFA Europa League Barcelona played bad game in several matches due to which now they want to correct those mistakes.What I have seen is that Barcelona goalkeeper has a lot. By performing well, due to which Barcelona is known as such a strong team.
Maybe you mean playing badly in the Champions League, not in the Europa League, because Barcelona, who are already in the Europa League now, is due to not qualifying for the Champions League group phase, so they have to be in the Europa League play-off round. And yes Barcelona will try to improve everything in the Europa League as well as in the domestic league as well as has been seen from the results in several matches there (La Liga).
Since their failure in the Champions League, they have really improved a lot, what they lacked so that they were knocked out of the Champions League. The evaluation they have made so far has gone very well and it can also be seen that they are far from the mistakes they made in the game. They are really aware of what they are lacking, and it is one of Xavi Hernandez's work that we see them as they are today.