I don't think Barcelona is only targeting La Liga. I see barcelona giving the same effort in every match of La Liga, Copa DelRey and champions league. Hansi Flick is interested in winning all three titles. Flick's target is not just securing La Liga.
Barcelona is now in a somewhat safe zone in La Liga. The top spot of the table is occupied by Barcelona. Even if they lose a match, the top spot of the table will be occupied by barcelona. Even then, if Barcelona cannot maintain its performance stability , then they will not be able to retain the top spot of the table. Real madrid is continuing to try to regain the top spot of the table. Only if Barcelona's performance is irregular, we will see Real Madrid at the top of the table..
As long as there is a chance, Barcelona will fight for the trophy opportunity to the maximum. Although the financial limitations they have do not make them look weak, they actually show their motivation to play better. This is a phenomenon that we cannot see in other teams with poor financial conditions. Only Barcelona is able to do that in La Liga, the Champions League and the Copa del Rey which now puts Hansi Flick one step closer to the trophy.