
The Selecao had travelled to Beijing as one of the favourites, but were comprehensively beaten 3-0 by great rivals Argentina in the semi-finals on Tuesday.
Brazil can still come away with a bronze medal if they beat Belgium in the third-place play-off on Friday, but Dunga is aware that will not appease a nation used to success on the global stage.
Yet the coach remained defiant in the face of criticism.
"Despite the defeat, I will continue with my job and keep my convictions," he said.
"This is a delicate moment and I have to be cold-minded to get over.
"We've worked very hard to clinch gold, but sometimes it is not possible so the only thing left to do is to keep morale high."
Brazil met their match in defending champions Argentina, who found the target through Sergio Aguero (two) and Juan Roman Riquelme.
Dunga's men also finished the match with nine men following late red cards for Lucas and Thiago Neves, and the coach admitted their game plan had disintegrated.
"The match was quite tough," he added. "Argentina played very well, intensively and that's a big bonus for them."
Argentina will face Nigeria for the gold medal on Saturday, and coach Sergio Batista is aware his players will need to be at their best if they are to retain their title as Olympic champions.
"We still have one more step to retain the gold medal we won in Athens. It will not be easy at all," Batista said.
"But against Brazil, we played with intelligence and personality. We knew they were going to wait for us to attack so we needed to be patient.
"We played a brilliant match."
Brazil can still come away with a bronze medal if they beat Belgium in the third-place play-off on Friday, but Dunga is aware that will not appease a nation used to success on the global stage.
Yet the coach remained defiant in the face of criticism.
"Despite the defeat, I will continue with my job and keep my convictions," he said.
"This is a delicate moment and I have to be cold-minded to get over.
"We've worked very hard to clinch gold, but sometimes it is not possible so the only thing left to do is to keep morale high."
Brazil met their match in defending champions Argentina, who found the target through Sergio Aguero (two) and Juan Roman Riquelme.
Dunga's men also finished the match with nine men following late red cards for Lucas and Thiago Neves, and the coach admitted their game plan had disintegrated.
"The match was quite tough," he added. "Argentina played very well, intensively and that's a big bonus for them."
Argentina will face Nigeria for the gold medal on Saturday, and coach Sergio Batista is aware his players will need to be at their best if they are to retain their title as Olympic champions.
"We still have one more step to retain the gold medal we won in Athens. It will not be easy at all," Batista said.
"But against Brazil, we played with intelligence and personality. We knew they were going to wait for us to attack so we needed to be patient.
"We played a brilliant match."





