Simone Inzaghi believed Inter deserved more against Genoa after his side missed the chance to go level with Milan at the top of Serie A.
Inter were given the chance to reel in the Rossoneri after Milan were held to a 1-1 draw at San Siro by Udinese earlier on Friday.
Yet the Nerazzurri were unable to take that opportunity, left to settle for a goalless draw at Stadio Luigi Ferraris despite finishing the game with 21 shots to Genoa's seven.
Danilo D'Ambrosio hit the crossbar with the best chance for Inter, who have now won just once in their last six matches across all competitions, while they have collected only two points from their last four league games.
"Naturally, the result leaves a bitter taste in the mouth," Inzaghi told Sky Sport Italia afterwards.
"We knew that we could've had a better approach, that Genoa are in good shape and created problems for us in the opening 20 minutes, but after that we certainly deserved more.
"Just like last week with Sassuolo, we had 20 shots on goal and didn't score. Evidently, we need to work better, it's just one of those periods, but we mustn't let our heads drop. I saw the right performance and we need to get back to winning ways.
"Genoa were not easy to break down, but we got into their penalty area 37 times, had 20 shots, hit the crossbar, there were other chances too that could easily have gone in.
"Evidently, what we are doing right now isn't enough to win games, we need to do more.
"None of the top six won last week, there is some fatigue for everyone at this stage of the season and it is a bit odd. Perhaps we should've run and worked smarter and not just harder.
"Genoa were pressing hard, the pitch was not in good condition. At the start of the season, we'd score at least one every five corners, today we had 14 corners to zero and didn't find the net. It's just one of those periods where it's not going in.
"We know that games are decided by incidents and we are not fortunate at the moment. It's disappointing for the fans, who supported us from the first to the 90th minute, but I feel they are proud of what we're doing this season.
"We already have the Supercoppa, we're in the Scudetto race, in the Champions League Round of 16 and the Coppa Italia semi-final."