He said: "Now we have two important competitions. We're at the top of the list and want to win.
"We'll have more pressure on the next few games but we must be strong and have good control of our emotions. Maybe this defeat could be a very good motivation for the next few games.
"My regret is we didn't play as well as we did in the first leg this evening. But I've worked for a long time in this environment and I know exactly what expectations are.
"It's normal that a manager is going to come under pressure if he loses a few matches."