The City captain has also defended his decision to take the first-half penalty which was saved by Worcester keeper Nathan Vaughan...
Coventry City captain Reda Johnson has expressed his embarrassment and disappointment after the 2-1 defeat to Worcester City.
The Sky Blues were dumped out of the FA Cup by the Conference North after Lee Burge was sent off in the first-half and Sean Geddes notched a brace either side of the break.
Johnson did pull one goal back for ten-men City with 10 minutes remaining but the Sky Blues failed to reach the second round at the Ricoh Arena.
Johnson, who flies to Morocco this week to play for Benin, believes the City squad needed to be more 'professional' against the Dragons.
Johnson said: "We're all really disappointed with the result and embarrassed for everyone at the club especially the supporters.
"We weren't good enough and we didn't act professional enough coming into the game. We needed to take a serious mentality into today's game and we didn't do that.
"Everyone is hurting at the moment and we've got to bounce back from today. This happens in the FA Cup and even when we had 11 players on the pitch, we weren't playing well.
"We must do better and respond to our poor form at the moment and do more work on making what happened today right. We're a much better team than what we're showing at the moment."
City did get a penalty in the first-half but Johnson's penalty was saved and he has defended his decision to take the spot-kick.
He added: "I decided to take the penalty because I wanted to step up and take the responsibility. I felt it was the right thing being captain and I'd do it again.
"I apologise for missing the penalty as it was a crucial point in the game and we could have turned it around.
"I would say that is the worst defeat I've experienced in my career. It was a difficult day for the club and there are no excuses."