As to the simple answer: What specifically has Kamala Harris done that you don't approve of, or not done that you think she should have done. When you answer this, keep in mind that much of what you have heard about her has been inaccurate and that as vice president she was working for the president, not enacting her own agenda. Also keep in mind that neither presidents nor vice presidents are kings the way Trump intends to be. When the people vote in a Democratic president along with a Republican House or Senate, not much good for the people gets done.
About the hard answer: I agree with you that the Democratic Party is corrupt. This is a relative term, however. In comparison to the Republican party, which cares about nothing other than giving more money to the rich, even when this adds trillions of dollars to the national debt and creates a situation in which we cannot do what we need to do for veterans and children,... well, in comparison with that level of corruption, the Democratic Party shines.
I, too, wish we had a completely uncorrupted and incorruptible government that cared about all the people.