> They promised to fix the economy, fight unemployment, fight back against the unjust Versailles Treaty, support families, bring political stability and make other countries respect Germany again, etc.

You're missing one component, which is that the Nazis took all of these (more or less) legitimate grievances and redirected them into the figure of the Jew. You're right in that this wasn't a result of some supernatural ability of Hitler and Goebbels, and that's the whole point. There doesn't need to be. I'm sure individual Nazis had similar thoughts as you do (this is just another motivational speech, these are decent campaign promises, etc). The precondition to repeating Nazi ideology is already present in normal psychology.