You need to put this to rest and focus your energy on making things better. The polls were not ever wrong. All the polls showed you was the *likelihood* of an outcome. No one ever said Trump would categorically lose. The majority of the polls just said that it was most likely he would not win, but there was always a very reasonable chance he would. If you are diagnosed with a disease and you are told that with 100% certainty you will pass away in a month, the odds are not in your favor. But if you are told you have a 28.6% chance of not passing away you will walk away thinking "That's good, I have a chance".
So please quit obsessing over the polls.