From Thursday, Australia and England will face the last match of the MCG test.
Tourists are approaching the first history test to flood at the historical site, facing the possibility of a white 16-0, losing both legs with a white ball 3-0.
“Everyone is really disappointed with how we have introduced themselves so far,” Knight said on Wednesday.
“We feel that we have never played our best cricket as a country.
“As a leader, you feel a little responsible that things have not gone best.
“I am probably someone who is the best thing when I have a little sense to prove and I certainly have it this week.”
The Persian Gulf between the teams seems big, as always, without signs of England to regain the ashes for the first time since 2014.