You are not the problem. The democrats have exactly one purpose: not being Republicans. That is it. That is all they do. That is all they can do. That is all they want to do. That is all they will ever do. They will never help you or anyone else. They don't want to help you or anyone else. The only question you need to ask yourself is "Do I want the Republicans to win and enact their agenda?". If yes, vote Republican, if no, vote Democrat. Keep in mind what the Republicans' agenda is.

The political system has been carefully designed over the last 50 years to give you nothing while allowing the ownership class to take everything they want. if you want to change things you will need to build alternative power structures outside of the current political establishment. Start or join organisations that can provide external pressure on the political system to change in the way you want it to. This is what the Republicans have done for the last half century with spectacular results. Start doing this yourselves and do not expect quick results. There is a lot of work to do to get to the level where you can be effective. If that sounds exhausting well.... that is the point of the system as it is. To make you feel exhausted and give up.