Ralf Rangnick questioned Manchester United's lack of physicality in their narrow 1-0 win over Norwich City and accepted his side have further room for improvement.
United made it back-to-back Premier League victories since Rangnick succeeded Ole Gunnar Solskjaer on a caretaker basis thanks to Cristiano Ronaldo's 75th-minute penalty.
Ronaldo scored United's 50th spot-kick away from home in the competition – only Liverpool (60) have netted more – after Max Aarons was adjudged to have pulled him down.
The Red Devils laboured for long periods at Carrow Road and required a couple of fine saves from David de Gea to deny Teemu Pukki and Ozan Kabak late on.
United only marginally edged possession (53 per cent) and the pass count (492 attempted to Norwich's 426), and Rangnick was not entirely pleased with his side's performance.
"It was an away game, a very physical, intense game," he told Sky Sports. "I've already told Dean [Smith] they played extremely well, they didn't at all play like a bottom team.
Rangnick added: "Some of our players are technical players, and today there was not so much space for technical solutions.
"Then you need to be physically brave and compete on that kind of level with regard to physicality, and that was something we didn't do in all positions."
Asked if his side played with less physicality than was on show in last week's 1-0 win against Crystal Palace, Rangnick said: "That was not deliberate.