Luis Enrique admits he doesn't have the answers to the losing start to his AS Roma career.
"We held so much possession, especially in the second half, but couldn't take our chances," said the Spaniard.
"I have been asked the same question since I got here: how long will it take? I have a good squad and am certainly disappointed with the result, especially for the fans.
"However, I cannot answer that question. I do not know how long it will take to develop this project. The club did not ask me for any objectives this season.
"We started a project and I realise I am an inexperienced Coach, but I am putting in the work and will continue to do so. I am optimistic and modest.
"It was my fault, without a shadow of doubt. The whole team attacks as a unit and when they do not score, it is not just the fault of the strikers, but above all the Coach and everyone right down to the goalkeeper.
"Similarly, when we concede, everyone is to blame including the forwards and midfielders."