The AFC South side scored no touchdowns and were turned over four times during the 27-3 defeat.
The head coach told the team's website: "Our main approach was to really concentrate on the fundamentals. I thought it showed up right away with the first group on defense. The timing and the issues, we have to clean those things up.
"We need to learn as a team to finish. We have to clean those things up. Those are the things that are under our control that we have to take out of our game. That will be the challenge for our team. We can talk it, but the best way to demonstrate it is on the field."
The Jaguars face the New York Jets next week.