Jurgen Klopp's side have endured a difficult week, conceding six goals and taking just one point from games against Frankfurt and SV Hamburger.
Summer signing Reus believes that confidence in the camp is still high after extensive discussions this week.
The German international told the club's official website: "The media may have a different perspective on this than we do.
"The big plus of your team is that we talk about our mistakes - and how to correct them."
Reus goes up against his old club this weekend when Dortmund host Borussia Monchengladbach.