The Ravens traded receiver Anquan Boldin and were without tight end Dennis Pitta for the majority of the season due to injury, as quarterback Joe Flacco found life tough just months after his side's Super Bowl win.
He told the club's official website: "It was tough for the offense, much more than we anticipated. The lack of weapons really hurt at times.
"We'll be better on offense. I really like Gary's schemes. It's very precise. It's physical. I think we'll run the ball better, we'll keep the ball more and we'll have big plays.
"You can tell the players, especially guys like Joe, like it -- and they can see that we have a good chance to be a lot better."
The Ravens were ranked 29th in total offense in the 2013 season.