The 59-year-old told Canal+: "We have made a very complete game on both the offensive and defensive against a team that tied with AC Milan and on this pitch it is very difficult.
"We got good movement from the team but that's less important than the attitude to go out and seek victory in each game, no matter who plays.
"Before starting the Champions League I knew we had to go out and win games. The squad responded very well and we had clear chances to score more goals today."
Malaga are top of their group after two wins without conceding a goal.