City are now 13 points clear at the top of the Premier League, having won their last 12 league games.
Asked whether the result was disappointing, Tuchel told BT Sport: “The result, yes. This can happen if you play at City.
“We deserved a draw, defended very well. We did not allow chances. The goal was when we were not under pressure. We had chances. Performance wise, this is okay.”
“We did not deserve to lose. We have won games like this against City.
“It was a big problem today offensive wise and the performance of the front players. Zero touches in the box. That was simply a lack of precision, timing and composure. We lost too many balls too easy. It was a big problem in our game today.”