Everton boss Sean Dyche was left disappointed after defeat to Arsenal at Goodison Park.
Leandro Trossard struck the only goal of the game as David Raya kept a cleansheet on debut for the Gunners.
For Dyche, he conceded his team offered little attacking threat.
He said, "It didn't deserve a win. We defended resolutely but we never got to grips with the ball. The defensive side worked really hard but on the attacking side, we were never really near to laying a glove and making a difference.
"They pressed well and we were unsure whether to go short or long. You have to get the first pass away on turnover. If you don't get it away then the team can't open up on the counter.
"The details on the set-piece - a good finish from them but really poor on the details from us.
"I was expecting us to get more points really, from the feel from the group in pre-season. The performance levels have been there but the details kill you in football.
"I said clearly after last season there was a massive amount of work to do. There still is - it can't be all changed in one window."
