The way Barcelona is performing this season is good, and I think they don't need to put in as much effort as you claim. Barcelona has shown a greater performance this season than last season, which means Barcelona has put in much effort in their play to be able to achieve this result this season. Barcelona is still leading the La Liga table so far, and nobody believed they would be donating La Liga this season because of the way they performed last season. If Barcelona players don't sustain any serious injuries this season, Real Madrid will find it hard to overtake Barcelona at the number one spot in the La Liga table this season.
Barcelona are playing well and they can win La Liga title but they have more important things to solve. Their finance must be improved for becoming more healthy in future. In latest seasons, they are betting too much with more loan money and continuing with their bets on star players from transfer market. Each summer, they struggle to clean their squad and prepare available spots for new star players. In this summer, they faced with same issue in registering Dani Olmo in La Liga and the player missed several early matches before Barcelona were ready in finance and player salary ceiling to register Olmo successfully.
If Barcelona can change their approach in financial management, and can win titles to get money from title awards, they will improve their finance with time. If they don't change current risky approach, their finance will be broken more and bankruptcy risk will become bigger with time.