Kane, who will captain his country at the tournament, acknowledged that England have been "passive" and have focused too much on avoiding defeat in previous tournaments.
Despite England taking the lead from the penalty spot through Wayne Rooney, Iceland still went on to win 2-1 to progress into the quarter-finals at the expense of a star-studded English side.
Kane says the current squad will bring a fresh approach to this summer's World Cup, though, saying: "The aim is to be aggressive and courageous in possession". In the end, we want to entertain where we possibly can.
"There will be tough moments, and ups and downs". But for us it's to play attacking football, to score and that's important. However, he has not scored at a major tournament, having not found the net in any of his four appearances at Euro 2016.
"I'd be surprised if the majority of players did not say the World Cup is the biggest sporting event in the world".
The Euro 2016 humiliation at the hands of Iceland, when Roy Hodgson's team was eliminated by the tournament minnows at the second round stage in France, further dented the damaged relationship between the supporters and players.
"It's different now. I think if you asked every single player what the difference is now they would say that we are prepared as a team for every scenario".
"We're proud to be here, we will work hard, be energetic". A lot of us just expected to win. We weren't prepared for the game - and it backfired.
Stoke City stopper Butland has not yet given up hope of being selected for the games against Tunisia, Panama and Belgium, but he will give his full support to Pickford - or indeed Pope - if Southgate leaves him on the bench.