Maybe in the short term it's difficult. Relying on players from the academy could not guarantee they would be successful. There are a lot of problems at Barcelona so this has an impact on their achievements.
Maybe if for the long term they can be successful again. Attempts to sign Xavi also can not be hopeful, because he is limited by the crisis to choose new players. Xavi is currently only maximizing what Barcelona have.
Xavi was a celebrity as a player at Barcelona. Then definitely one of the best midfielders in the world along with Iniesta on that team. Doesn't he just have too little coaching experience? Easy to say, but an experienced coach will not be happy to manage Barcelona at the moment. Xavi seems to be the best option at the moment. They do have potential, but all the puzzle pieces have to fit together well with these players.