Claude Puel says he has seen many encouraging things from his Southampton team in their first few months of the season, but insisted that did not excuse the performance at Hull City.
Saints were beaten 2-1 at KCOM Stadium, as a second-half turnaround from the hosts saw them overcome Charlie Austin's early penalty kick.
Puel explained that the performance his side produced was not a characteristic one.
"We can do many good things. We can show very good football, good intensity and good quality," he said. "After all these games, we don't have all the points that I think we deserve. This for me is the truth, but I'm not satisfied with this game.
"We have lost different points after very good games at home or away, against great teams, but this for me was different. We must do better to control this game and to take the good points.
"We have a young team. It is the first time this season that all the squad can play every three days. It's very difficult, with international games also, because we have many, many international players. It's a good thing, but they don't recover.
"But it's important to learn and I think we learned a game is never finished and it's important to keep all the time the good concentration and to give the good answer. I think we lacked the good concentration for this game and it's a pity. We are angry."