The league leaders suffered a 2-1 home loss to Freiburg on Tuesday to crash out of the German Cup in the last eight, with the visitors grabbing the winner with a second-half stoppage time penalty.
He enjoyed a dream debut on the bench last week with a 4-2 victory over former club and title rivals Borussia Dortmund but was brought down to earth quickly with Tuesday's Cup exit. "Overall we are lacking form. We should not make the mistake of analysing just tactics. We should become more resistant, develop some bite as a team," he said.With two titles left to play for and a Champions League quarter-final first leg at Manchester City on Tuesday, Tuchel has no time for major fixes.
Against Freiburg, Tuchel will be without forward Eric Maxim Choupo-Moting, whose knee injury flared up again. The Cameroon international is also doubtful for the game against City, Tuchel said.