The Gunners have now won three straight games in the Premier League for just the second time under Arteta.
“We need to get better at defending as a team, as we have shown against Manchester City and Liverpool.
“We need to be more resilient in terms of our defending and, until we get clean sheets, we won’t get enough points to move up the table because we haven’t got any proven Premier League scorers in our squad.
“They have had some moments of joy at Liverpool (a 1-1 draw) and that joy hasn’t transformed into any solid performances after that. It shows when we lose the ball we forget how to defend.”