The luck factor also becomes influential, so they can't score at least 1 goal in this match. But this result is good for them because their rivals can't win, so their points are still wide, even if it's only 1 point. Talking about the results of the match, indeed, not many could have predicted this result because on paper Barcelona had all the advantages that should have allowed them to win an absolute victory. But this is football, the outcome of the match cannot be predicted in advance.
Correct. even a surprising result in football is considered normal. and you are right that a draw is still much better because at least Barcelona still get 1 point from that match. And Barcelona also has the opportunity to continue to get full points in the next match, namely against Getafe. and it shouldn't be difficult to beat Getafe for Barcelona. because Getafe in this season we really can't expect. Even Getafe are very close to the relegation zone at the moment. they only have 3 points difference with the club which is in the relegation zone.