Arsenal captain Martin Odegaard admits they were left frustrated after Sunday's draw at West Ham.
Arsenal blew a 2-0 lead - and missed a penalty - as they drew 2-2 at West Ham.
A close-range finish from Gabriel Jesus and Odegaard's volley had the visitors 2-0 inside the opening 10 minutes. But West Ham fought back first via a Said Benrahma penalty, won by Lucas Paqueta, and then Jarrod Bowen's equaliser.
Between West Ham's goals, Bukayo Saka missed from the spot following Michail Antonio's handball.
Afterwards, Odegaard said: "A lot of the same things to last week, started well but then we stopped, allowed them to play on their qualities. We gave them the game they wanted, we gave them hope, and that's on us. We have to look forward now.
"We started to do a lot of stupid things on the ball, we allowed them to play on the long balls.
"We have to remember we are still top of the league with everything in our own hands. The same mindset, same mentality to make sure we win the next one."
On Saka, he added: "These things happen, he has been brilliant all season and been clinical from the spot. But today was not the day for him. We win and lose together."
