Defending won't do any good, but attacking desperately will probably end up in an embarrassing defeat for Chile. And if Chile suffer a shameful loss in Asuncion, Garcia will probably resign, and Chilean fans will be looking for another sport. I don't think that anybody is expecting a victory in the next game, but certainly everybody wants a decent game and a reason to be hopeful for the next Copa America. That is why Garcia has to think well before designing the strategy and has to put the players where they belong. This is no time for unhelpful experiments.
Strikers have to play where they belong, as do the midfielders.
No good can come of playing an outstanding winger like Rodrigo Tello in the middle, as we have already seen on several occasions. Nor should Garcia expect a striker to be able to come back and play like a midfielder at the international level. Soccer offers many surprises, but Chile have run out of luck and what is worst, out of motivation. The coach and the players have to understand that this is not only a game for thousands of fans. The Chilean team needs the fans as much has they need the team, and only victories and good games keep that relationship working.