Barca did poorly in the UCL, but they had a good performance in La Liga. I don't know if this is a tactic from Xavi, but it looks like Barca is overwhelmed to face a team that is in the same group as him.
if Barca wants to qualify for the next phase, I think Barca must turn things around from Barca's previous matches with Munich and Inter. Winning the match with these two teams will certainly be quite difficult for Barca. although they have a more solid team at the moment, Barca still has to work hard.
Barça have not yet met any strong opponents in La Liga, which is why they have such good results there. If in the Champions League Barca played 3 times with Victoria, then there would also be good results, but you can’t do this, so Barcelona had to play with Bayern and Inter and it received two defeats. I can't say that these two defeats were inevitable, but when assessing the strength of Barcelona, I pay more attention to these two games than to the games with weak teams in La Liga.
Inter next for barcelona in champions league and then bayern munich in the next champions league fixture.
a real tough fixture as they are in a hard rock group , they have to win it otherwise they are out of the champions league group in huge disappointment from the fans , i tend to agree with you though that barcelona in la liga had no real obstacle to take it as a parameter that they are successful this season , champions league is.