So there were a couple of opposition groups, the Edelweiss Pirates being such a group. The Edelweiss Pirates were groups of youths who opposed Nazi rule. The Edelweiss Pirates were primarily opposed to the way the Hitler Youth movement had taken over the lives of youths in Hitler’s Germany. (https://www.historylearningsite.co.uk/nazi-germany/the-edelweiss-pirates/) And there was the white rose group, founded by Hans and Sophia Scholl who opposed the genocidal Nazi Policies. But the Scholls were caught and imprisoned as were many others who opposed the Nazis.

There was in reality little rebellion against the Hitler Youth as children were indoctrinated from a young age, changing the curriculum in schools and introducing more physical education, science and military history for boys and cooking and child rearing for girls. This meant that there was little opposition because the children were taught from a young age the Nazi propaganda. In 1936 a law was passed making it mandatory for all German youth to participate in the Hitler Youth Movement. Parents could be punished if their children did not regularly attend meetings. And by 1939, about 90% of the Aryan children in Germany belonged to Nazi youth groups. If you read this article it explains how children in Nazi Germany lived and thought thereby explaining why there was little opposition…https://www.facinghistory.org/resource-library/decision-making-times-injustice/life-german-youth-1930s-education-propaganda-conformity-obedience And if you read the second of these two accounts it explains how the Hitler Youth was seen in the eyes of children at the time. https://www.facinghistory.org/holocaust-and-human-behavior/chapter-6/joining-hitler-youth

I hope this answers your question