Finke's men started poorly with a 1-0 defeat to Mexico, a loss which could have been far worse after Giovani dos Santos was denied a first-half penalty and saw two goals harshly disallowed for offside.
The coach demanded a response for their second match against Croatia, but his side put in an even worse display, losing 4-0 to the Europeans.
"The third game is special, in some ways," he told reporters.
"It is impossible to leave the World Cup with everyone having the impression that the level of Cameroon is what we showed against Mexico and Croatia.
"This is our motivation to prove that we can do more
"I do not think we came to Brazil as favourites, but like all teams we also dreamed of a good World Cup.
"Dreaming is part of football. We were unable to qualify, but we will try to have a good farewell."
