Lacazette scored what proved to be the winning goal as the Gunners beat Huddersfield 2-1 on Saturday.
It was their first away win in the Premier League since November.
Speaking to reporters after the game, Lacazette said his team-mates need to do more.
He said: “Yes, I think we should have had more situations to score more goals, but we played against a strong team today in the second half.
“We were in a difficult moment so these three points are good for us.
“We knew today was going to be hard but we are happy with the three points in the race at the top of the table.
“We knew we had the quality to win today, it’s about us and we did that.”