In Neymar's absence, Brazil defeated Russian Federation 3-0 before recording a 1-0 triumph over Germany on Tuesday to gain a small measure of revenge for the 7-1 battering they received against Die Mannschaft on home soil in the semi-finals of the 2014 World Cup.
"We saw today that we aren't as good as we are made out to be and as some players believe".
"We had a few young players, who will learn from this, but in addition, the body language was not right for some players".
Given preceding draws against England, France and Spain, Germany have failed to win any of their last four games - a worrying state of affairs with a World Cup looming.
"We are learning to play well without Neymar and that is part of our strength", said the Brazil boss.
The result ended Germany's unbeaten run of 22 matches dating back to its semifinal defeat by host France at Euro 2016. Germany's best opportunity came in the 16th minute when Ilkay Gündogan sent a good cross from Julian Draxler skyward.
Only two World Cup winners - Kroos and stand-in captain Boateng - started against the Selecao.
Trapp is expected to play at least one half of Germany's friendly match with Brazil on Tuesday, although Neymar is absent as he continues his recovery from a foot injury.
"We have lost the game, but we can live with it as we have four or five points which we need to intensively work on", said Germany head coach Joachim Loew.
Even the body language was wrong, said Loew, and when Jesus scored the victor on 38 minutes "we were bad in every department".
"No, I'm hardly anxious about anything because I know that the team is capable of something completely different", assured Loew.
"You could see that we are not as good as we are constantly being told we are or even as some of us may think we are", Kroos told reporters after the 1-0 loss.
The Germans have been drawn in Group F of the World Cup, along with Mexico, South Korea and Sweden.
"Everyone has to be ready when the moment comes - egos are less in demand".