Well there are several reasons when Barcelona became more monotonous from the start of the first half because indeed with the loss of Pedri and De Jong in the first half indirectly this made them seem to lose control of the midfield.
Even though in this match they managed to get possession as usual but the absence of a good creator like De Jong made this a little more complicated for them which made the score unchangeable in this match.

Now, the impact of yesterday's match is actually not only short-term but long-term because apart from them failing to make a difference by shifting Girona to second place in the standings, they also have to deal with the injury of these 2 players.
There have been reports that De Jong's injury is a sprained lateral ligament in his right ankle while Pedri has an injury to his quadriceps muscle which should keep both players in the medical room for over a month. This is a big blow for Barcelona as they are still in desperate need of these players especially with their creative midfielder Gavi still not sure when he will recover.