Omer Riza spoke to the media after Saturday's Sky Bet Championship fixture at Derby County.
"We knew it was going to be a tough game." Omer began. "We wanted to be able to control the game and create opportunities.
"From nothing, really, we've conceded a goal. From a throw in, a scrappy goal that puts us on the back foot, and then we're chasing the game. We need to do more.
"Football is about chances and scoring goals. It can put you on the back foot when you don't do that.
"I think our aggression around the pitch has got to be a lot better, and our intensity to get close to them. Derby worked really hard today, and hard work sometimes pays off.
"It's not where we want to be. We've performed well in patches, but it's not enough. We'll keep trying to get better, win games, and tidy up on the things we're not doing well."
The Bluebirds made six changes to the starting lineup, with new recruit Will Fish also coming off the bench at half time.
Omer continued: "We've been waiting to try and get players onto the pitch - Will Fish got on today, Anwar El Ghazi too. We've made new signings, and we want them to be impactful for us.
"We need the whole squad. Now those guys have had their first real run-outs, it's about improving and being better.
"We've got enough to win games in the Championship, for sure. We've been unlucky, and we know that certain parts of certain games have cost us, which we need to nip in the bud.
"There is disappointment all around the dressing room. We have to reflect, and start working towards the next game."