Hillary was horribly unpopular; saying otherwise is blatantly denying reality. She only won the popular vote (barely) because Trump was so unpopular. She lost because she was so unpopular, causing so many people to either stay home, vote 3rd party, or vote for the also-unpopular Trump, and because of the way the Electoral College works (giving rural states more power per vote).
How many people bothered showing up for Hillary's rallies? That's how you measure popularity and enthusiasm. Hillary didn't have any. People only voted for her because the alternative was viewed as worse.
In the (generally liberal) DC area that I live near, I saw almost no bumper stickers for Hillary. I actually saw far more bumper stickers for Obama than Hillary! Why would I see far more 4 or 8-year-old bumper stickers for Obama than for the current Dem candidate? Because she's unpopular, that's why.
Hillary ran against one of the most unpopular candidates in presidential election history, and she lost. Any other candidate would have easily won. Trump was an outsider, and deeply unpopular even among Republican voters. This should have been an easy election for the Dems to win, but they insisted on running the most unpopular, unpalatable candidate they possibly could have, and that's why they lost.