The Germans cruised to victory against the Caribbean nation in Sunday's (14.06.26) Group E opener in Houston and the coach was pleased to see his team respond emphatically after conceding a shock equaliser.
Nagelsmann said: "[Curaçao] got the equalizer with I think the first shot on our goal. And then it was interesting to see how we can deal with that.
"It's always like that in football when you don't have the opportunity to score the same number of goals as in basketball or American football or handball. It can be dangerous if it's a kind of underdog and they get the equaliser. They feel better and gain more self-confidence. They take more risks. They try to score a second goal."
Nagelsmann explained that he was impressed by Curacao's approach to the game despite the one-sided scoreline.
The former Bayern Munich boss said: "Our opponents actually played better than many people in Germany expected. They had better one-on-one situations than anticipated and didn't really play much differently from what they had shown previously. I want to compliment Dick Advocaat and his staff for preparing them so well."
Nagelsmann also revealed that the hydration break during the game enabled him to tweak his tactical approach.
He said: "Curacao played with a diamond today, and we adjusted how we attacked before the hydration break.
"But even so, there were still two or three moments where it took a little while because, at the end of the day, you actually very rarely play against a diamond-shaped team these days. It's practically unheard of. Very few teams do that anymore, and we needed a bit of time. The water break was actually good to simply reiterate what we had already adjusted on the board."