What happened to Barcelona in the game against Real sociedad was never expected, I'm not surprise of it because football is full of surprises and sometimes we can't predict what the outcome of a game would be. Sociedad is just lucky to win the game , this lose is what Barcelona would learn from. Barcelona still remains the best team in laliga for this season and this lose will be a motivation for them to get more points.
The thing is that you don't look down on little things and this is in the case of Barcelona because last season was terrible for them, and their is no way that we are going to be to compare the both of them now the way at which Barcelona is going they are the potential winners because who else do you have confidence in, that you think they will be able to win if not bacelona and I actually love the way they decided to pickup, and even if I love Madrid Barcelona gave them a good season at least next season they will be able to prepare better because their is no way that you won't notice that Madrid is struggling and the best team now in the premier league is not more than Barcelona.
This is how football goes, anything is possible, no matter how strong or weak the two teams are facing each other, if everything has to happen then it is inevitable. Regarding Barcelona's defeat when facing Real Sociedad, in terms of the game they played well and they dominated the game. However, the defense built by Real Sociedad made it impossible for them to penetrate and score goals. Meanwhile, Real Sociedad were able to play better in attack and managed to create several opportunities, one of which they managed to convert into a goal for the victory they managed to get in the match.
It is very important to take the lead against Barcelona, and it is more important to maintain this lead. Because Barcelona is a very strong team and their attacking rights work really well. You have to be careful against this machine. This was what Real Sociedad did best. They managed to neutralize Barcelona. Barcelona did not have a single shot on target throughout the match. As a result, they were the winning side at the end of the match. Getting three points from Barcelona is a huge advantage because many teams in the Spanish league lose points against them.