In total, the Indomitable Lions let in nine goals during their short stay at the World Cup, but Finke believes that their defensive problems can be solved.
He told reporters: "There were times we played well but we need to work on our concentration.
"We lost the ball three times and conceded three goals from it. We don't seem to be able to concentrate for 90 minutes and we'll have to work on that.
"Brazil deserved to win tonight, they created more chances."
On Sunday, Finke said that he would be speaking to certain members of his squad after what he called "unacceptable" behaviour.