Pochettino said: "Very disappointed in the way that in the second-half we managed or deal with the situation. We are a team that, when we play in possession and play forward, we are able to create too many chances, maybe not to score all the chances we created. We need to improve our percentage in the game.
"After today, we didn't show the capacity, the energy, the anger. Not the minimum to compete in the Premier League. In the defensive phase we concede too much. That is why I am so upset and disappointed. It's more here (in your heart) and here (in your head) than in your legs to be strong like a group, to be strong like a team. That is sometimes the circumstance for different reasons we are so slow evolving in this area.
"That is the key today. It's not to find excuses. The team played well, yes, we have energy, yes, we go forward, yes, but afterwards when we don't have the ball we don't have the same energy.
"Sorry, but I am not happy with the performance when we don't have the ball. If we are able to create chances in the way we did and have the capacity to move and find all the different ways to penetrate a team that play with a block very deep. They are a very physical team, we need to be strong also and have the capacity to recover the ball too much.
"Remember the first-half, the keeper played quick into action and the action finished into our last third, into the box. That is to have hunger, to compete. Sorry for my speech but it is difficult to accept not to win a game because it's a must-win game to attack a different position.
"Yes, we need to accept that and recover the situation. On Thursday we have another game here and we need to be with all the energy to be competitive and clear our head now."
He continued: "I am defending my team. I am describing the situation. If you ask me am I kidding someone? No. We are part of the problems. It's to blame everyone."
"Look at the way we concede the first goal. With one (player) less, they played easily and then we conceded. That is about to realise, we need to compete, it's different when you play football. But after we need to increase our work level.
"It's not to blame the players. It's to blame everyone because maybe we need to be a bit tougher when we have the players. We had only one day to prepare because of different circumstances with the national team.
"We need to be a team with better communication and to be more competitive. I am describing what happened a few minutes before."