They played few warmup games before the tournament compared to some of their opponents while there has been continuous changes at the coach's office.
Current coach Carlos Amadeu took over only a year ago and the chopping and changing meant that Brazil, unlike rivals Uruguay or Argentina, have had no consistent game plan or style, with each new manager bringing his own ideas.
"We feel that in recent years the youth teams have had a lot of different leaders, with lots of changes," Ney Franco, a former under-20 coach, told O Estado web site.
A lack of interest in the tournament was also evident in coverage with Brazilian media devoting more space to Neymar's 27th birthday party than their youth team' defeat by Uruguay the same night.
The Brazilian Football Confederation has also provided no information on their website about the players who went to Chile other than their names.
Source : https://www.nytimes.com/reuters/2019/02/10/sports/soccer/10reuters-soccer-brazil.html