Germany head coach Joachim Loew has promised sweeping changes and Kroos has resisted the urge to retire.
“Yes, I will continue until Euro 2020 and have set the big goal that we will be far more successful than last time,” said Kroos.
However, Kroos says the squad Loew selects must find the necessary drive that was so badly missing in Russia.
“We have to be greedy and more forceful again, as far as goal-scoring is concerned,” added Kroos.
“And we have to be more unpleasant to play against in terms of defence – without just defending.”