The vibe Lucho transmited to the team was that this was an easy match. And once we had to work hard to fix the fact that we underestimated Alaves, we just couldn't do it, because wanting to win and working hard to achieve that it's not a mental setup you just switch on, but the kind of attitude you have to have from the start. We didn't have that desire, and Lucho is the first to blame because his prepping of the game reeked of arrogance. The tactic comes 2nd, the main problem was that we tought this was going to be an easy match, one we will win just by showing up, and once we had our work cut out for us, we just couldn't climb back and win against an opponent that clearly took this game twice as seriously as we took it.
All on Lucho. Not only did he put in a first 11 with no real connection, and with some big structural issues, but he also disconsidered our opponent, and ended up being outsmarted by it.
Arda never played RW for us, and this was Alcacer first game at CF. That alone means 2/3 of our attacking trio is a novelty, something that hasn't been seen before at Barcelona. Neymar himself is a novelty this season, his first game after almost 5 months. You add to that the fact that Denis Suarez has had a really bad game, and is starting to fade away since the good form he's showed in preseason, the fact that Rakitic is no playmaker, no matter how you loook at it, the fact that the defence had no player who could get things organized in the absence of Pique, that Aleix Vidal is just a mediocre RB, and that Mathieu is an average defender who gets a pass here because he sometimes scores a header (no matter that he alone made 3 fouls out of stupidity in first half, and that his positioning is really bad). Also add that Cilessen is at his first game, and that Digne is pretty good, but he's clearly a level bellow Alba who is one of the great LBs in the game, along with Marcelo and Alaba. You add all those things and you realize the team which played with Alaves is disfunctional, and that has nothing to do with the squad, but with how it was put to use.
Having a great squad doesn't mean you have to go overboard. It's something that gives you options, but they still have to be the right options, not the shit we say last night. You still have to think things through, which Lucho obviously didn't, because he tought this game would be easy.