The Sky Blues were denied a bonus point at Forest Green on Tuesday after a goalless 90 minutes led to an 8-7 penalty shoot-out loss.
Sky Blues boss Mark Robins felt that his side did enough to win the game prior to the shoot-out but admitted there is still more work to be done.
Robins said: “We did enough to win the game and created enough chances to score, and if you take those chances, you avoid the loss on penalties.
“It Is about being on the front foot, believing in what we do and playing more like we did in the second half when we did create those opportunities.
“There were a lot of things that were good but in the end, we didn’t take those chances and if you do take them, you win the game comfortably and take three points.”
Robins made 10 changes from the side that faced Rotherham on Saturday and admitted that the weekend defeat should not have affected tonight’s performance.
He said: “The last two games, certainly Saturday, will have taken some confidence away from them but bearing in mind I made 10 changes that shouldn’t have happened.
“There are places up for grabs for the game on Sunday and I have got some thinking to do.
“What I ask from the players and what I am demanding, is that they go out and give their all in terms of positivity.”
Despite City’s positive start to the seasons, Robins believes there is still more to come from his squad.
“We need to keep practicing and keep the ball moving quickly because there are times when we are a little bit negative when we have the chance to play forward.”
“It is early days still and it is going to take time because I am asking the players to do things that they need to learn.
“There are times that you get bumps in the road but you have got to get through them and keep doing the things that in the end, will ultimately get us success.”