The goalkeeper wants to focus on facing Real Sociedad before thinking about the second leg against Juventus
Marc-Andre ter Stegen has described Barcelona's Champions League defeat by Juventus as a "painful night" for the club.
Juve romped to a 3-0 victory in the first leg of their quarter-final tie, Paulo Dybala scoring twice in the first half before Giorgio Chiellini added a header after the break.
Ter Stegen thinks it is best for Barca's players to discuss what went wrong internally, but acknowledged the loss had hurt.
"It was a painful night," the goalkeeper told the club's website.