Barcelona have been on a really unfortunate run in the recent times. They got their second loss in their last three games in the league. They fully dominated their Rayo Vallecano game but were so unlucky to lose to them by 1-0 in Camp Nou. They need to get over their bad luck as quick as possible to be able to keep their current position in the league table. Otherwise, Sevilla and Atletico Madrid are right behind them and at least one of them might end the season ahead of Barcelona. But I don't think that Barcelona's bad form will continue.
Welcome to the end of the season

do you think finished in 2nd and 3rd rank are important for barcelona?
I don't think so as long as Barcelona are still in the top 4 they will be comfortable in any rank especially in a financial crisis like this
We can't see the situation behind them what they are doing and what they are planning only they know.
I think you are wrong. If even for the players, the coach and the club management it does not matter whether it is 2nd or 3rd place due to finances, I am sure that for supporters 3 in a row losses at Camp Nou means a lot. If it is as you say and everything is just a calculation, I am sure that if they keep counting this way, they will lose a lot in the eyes of the fans.