"Brutal. I'm very disappointed. I can only apologise to the travelling fans," Omer Riza said.
"To lose 7-0 is unacceptable really, no matter how good the opposition is, but we have to move forwards.
"We laid down towards the end and conceded really cheap and simple goals. The aggression to stay in the game wasn't there."
Riza says he was hurt by the manner of the defeat.
"To come away and get beaten 7-0 is painful," Riza told BBC Radio Wales Sport.
"Now it is about how we deal with it. It's a painful day for all involved and we have to learn from it.
"Leeds were miles better than us, that is why they are top of the league and we are where we are.
"It was a humbling and a very disappointing day for us as a staff and a club and players. I think we froze in the first 15 minutes and there were so many things we didn't get right."
Daniel Farke
"After a win, first of all it's always relief.
"But of course when you have such an impressive scoreline as this it's even more enjoyable.
"This league is relentless and you have to become relentless yourself and we showed this today from the first second to the last.
"In the last 20 minutes, when we were 4-0 or 5-0 up, we still had the desire to run back and defend the clean sheet but also the discipline to create more chances - we could have score a few more.
"Quite often in such a game the offensive players have the temptation to cheat a little bit because they're thinking of being selfish and want to shine a bit more.
"But everyone chipped in for the team and even the offensive players were sprinting back and fighting. We had full control until the last second and that's why we created so many chances.
"A day like this doesn't come along very often, especially not in this league, so you have to enjoy it. I'm in a good mood."