Instead of trying to win their hearts, Hitler used terror for those who opposed. Therefore, many people feared the Nazis and especially feared what would happen if they went against the Nazis because of the Gestapo. As a result of this, many people who opposed the Nazis stayed quiet and some used passive resistance. For the moment, staying quiet helped the Nazis as they had no trouble to face, however, this meant that there were many fake followers of the Nazis. This really meant trouble for the Nazis as at any point that they were vulnerable, many people could turn on them and go against them. This would cause many others to start going against them which therefore would lead to the downfall of the Nazis. Not only that, political opponents of the Nazis all that could still meet, met secretly and all planned on how to take down and dethrone Hitler. There were also people actively resisting such as the white rose group who, later down the line, opposed the Nazis by throwing leaflets bad-mouthing them. Stuff like this was happening beforehand as well such as people talking about how they got tortured leading to many people not liking the Nazis. That therefore led to many people starting to resist the Nazis and not like their ideology. A big factor creating hate for the Nazis were their racial and religious views. They didn’t care much about religion and for that reason, they restricted religious rights. This caused many religions mainly Catholics and Protestants to go against the Nazis and protest against them.
Overall I think that the Nazis were not very successful in tightening their grip on the German people as although they used propaganda to get many on their side, They also used a lot of terror which actually increased peoples hatred for them. Also differentiating people racially and restricting religious rights caused more hatred and less loyalty causing the Nazis to gain many traitors and people ready to go against them when they had the chance