You aren't wrong and you aren't right to say that Democrats are losing in Washington.
Facts supporting your assertion that Democrats can't win are obvious -- Republicans control all three branches of government.and a majority of state houses as well.
Facts against the assertion that Democrats can't win are: More people voted for Democrat Hillary than Republican Trump and Democrats gained seats not only in Congress but also across the country in 2016. Also, voters are just now getting a chance to see how badly Republicans govern and opinion polls as well as recent special elections show changes in levels of support for Democrats.
As far as your "Democratic Party not good enough" BS, it is true that Republican policies aren't going to affect a white man very much. So you don't really care if, say, 11 million families are terrorized by ICE. You aren't accepting Medicare or Medicaid and so aren't affected there either. Not right now, at least. So, yeah, you can be complacent about the Republican policies.. Your right to vote isn't jeopardized and so you don't care if Republican stay in power for five or ten more years.