you guys don't seem very familiar with what her platform actually was & just bought into right wing talking points.
and presidential elections are typically won by very small margins- hers just weren't in the right geographic locations. so 2016 wasn't some mandate against dems in general that you think.
there were plenty of "competent" candidates who ran against trump, but they did not win the nomination. likewise there were many young, progressive candidates running for this years race, and most of them have been sidelined already.
this is not due to "corruption", its just not enough voters liked them.
but keep not voting if you want and see where that gets you.