Confidence has never been a problem for Joe Flacco. He started from Week 1 as a rookie out of Delaware and there were some predictable growing pains, but the task never looked too big for him. He’s gone on the road to face the Pittsburgh Steelers and New England Patriots, and won when the stakes were the highest. Instead of signing a contract extension the summer before the 2012 season, Flacco turned down several lucrative offers and famously bet on himself. He then led the Ravens to a Super Bowl victory months later. But as Flacco reviewed tape from Sunday’s 26-9 loss to the Steelers, which featured yet another poor and perplexing performance from the veteran signal caller, he noticed an offense that is not playing with much confidence and a quarterback who isn’t executing well enough to put points on the board. “Probably everyone plays their best, when their head is free and they can go out there and let it all loose,” Flacco said before Wednesday’s practice. “Offensively, I don’t think we’ve been doing that. I think our confidence level could be higher and I think the way we’ve played the last couple of weeks can definitely creep in and hurt that. We’ve got to do the best we can to make sure we continue to believe in who we are as players and who we are as a football team, so that we can go out there and play free and play the game come Sunday.”