Presnel Kimpembe accepted the Paris Saint-Germain players had to take the blame for their 2-1 Champions League defeat to Borussia Dortmund as Thomas Tuchel's tactics were not at fault.
Tuchel switched to a three-man defence, with Marquinhos lining up alongside Kimpembe and captain Thiago Silva at the back to grant Thomas Meunier and Layvin Kurzawa greater license to attack.
The move did not appear to pay off as PSG were outplayed by Dortmund and suffered a last-16 first-leg defeat following Erling Haaland's brace, although Neymar netted a potentially precious away goal.
Kimpembe was not looking to place the blame at the door of the head coach, however.
He told RMC Sport: "It has nothing to do with the tactics, we're the ones playing. The same players were on the field.
"It's up to us to show our will and do what it takes to get the victory. Here we are and we lost, but we still have a return match at home."
Meunier, who will miss the return leg through suspension along with Marco Verratti, suggested fatigue was a factor.