After WWI Germany was in a bad state, to them the Nazi party was an answer.
During 1921 and 1922 the Nazi Party grew significantly, partly through Hitler's oratorical skills, partly through the SA's appeal to unemployed young men, and partly because there was a backlash against socialist and liberal politics in Bavaria as Germany's economic problems deepened and the weakness of the Weimar regime became apparent. The party recruited former World War I soldiers, to whom Hitler as a decorated frontline veteran could particularly appeal, small businessmen and disaffected former members of rival parties. Nazi rallies were often held in beer halls where downtrodden men could get free beer.
The German people wanted were dissatisfied with the state of the nation and were looking for a place to lay blame and Hitler gave it to them. To Hitler's credit, he was an excellent orator and a charismatic leader. Those skills allowed him to rise to the level of power that he did.