Xavi believes Barcelona's supporters will be "proud" of their team despite a disappointing 1-0 defeat at home to Real Betis on Saturday.
After LaLiga wins over Espanyol and Villarreal and a Champions League draw against Benfica, the result marked Xavi's first defeat in charge of the Blaugrana since he took over from Ronald Koeman.
Barca's tally of 23 goals in LaLiga this term is their lowest at this stage since the 2003-04 campaign when they scored 19, while their points total of 23 is their lowest since the same season (20).
Xavi refused to be too downbeat, though, and believed his side deserved more from the game, which was ultimately won by Juanmi's breakaway goal with 11 minutes remaining.
"It is a shame because we did not deserve to lose," he told a media conference. "We did not have the luck we had against Villarreal today.
"We cannot allow a goal like the one we have conceded but it is a shame to have lost because we deserved to win.
"I think the fans will be proud of the team. We played a very good second half and Betis' goal came when we were at our best.
"Sometimes you have to know how to make tactical fouls and prevent the opponent playing and we did not do that.
"Their goal bothers me a lot because a situation like this cannot happen to us.
"I have told the players that this is football and that I am proud of them. They have given everything and if anyone deserved to win the game it was Barca."
Barca's attention now turns to a crucial Champions League clash against Bayern Munich on Wednesday.
The Catalan giants are second in Group E, just two points ahead of Benfica, and they know the only way of guaranteeing their progression to the knockout stages is victory at the Allianz Arena.
"On Wednesday we will have to compete like animals in Munich because we are at risk of not making into the last 16," he said.
"But we depend on ourselves. It's easy; if we win we're in the round of 16 and if Benfica don’t win we're through.
"We'll go with everything and play like we did in the second half today. We will see how far that takes us."