What Hillary Clinton did wrong:
Pretty much everything.
1. Mostly focused on PC outrage
She literally put out the dumbest ads imaginable. Ads where Trump was using "bad words" and children looking sad because Trump is using bad words. Those type of ads do not appeal to the average American, but only to the cocktail circuit/elites in Washington who think that Trump doesn't have the "temperament" to lead the country. Regular people don't think like that because we're adults, Trump is an adult and he's running for an adult position, free fucking reign say whatever the fuck you want, BUT fight for me! That's what regular people want.
Her slogan was "I'M WITH HER" which is literally a whole theme of if you're not with me you're sexist. She pretty much opened the door for Trump to say "I'm with you! The American people". There are some things Hillary could have attacked Trump on for example going after the fact that Trump had his products made in China and Mexico and for saying things like "we need to take out their families", or when he got caught saying he grabbed women by the pussy. She never went after him for those things and let him get away with it. If she was smarter she could have used those things against him in campaign ads and make him look like a terrorist monster who wants to bomb civilians and likes grabbing women by the pussy. She went with him using bad words. Hillary Clinton's strategists are probably the worst strategists I have ever witnessed in politics. Her strategists sucked.
She started her campaign against Bernie Sanders calling Bernie supporters "Bernie Bros" you're a misogynist, etc...! She pissed off her own base which she needed desperately to win.
2. Selfish/cult of personality and narcissism.
It was all about her. "IM WITH HER", me, me, me. Look at me, first women president, glass ceiling, lets break down the barriers. etc... There was a sense of inevitability that was just douchey. When Tim Kaine is sending tweets, before the election results are in, a day before the election going "
Now I get to look at my daughter in the eyes and say that a woman can be president of the U.S." The election didn't happen yet, why are you so sure you're going to win? These people were living in a bubble and underestimated Trump since day one.
"Yeah he's flirting with it, but he won't actually run for president"
-Oh shit he ran for president.
"Its cool because he won't actually be in the debate"
-Oh shit he's in the debate.
"Oh its cool, he won't actually win the debate"
-Oh shit he won the first debate.
"He'll never win the second one"
-Won the second one.
"He'll never win the third one"
-Won the third one.
"He'll never win a primary or a caucus"
-Oh shit he won one of those too.
"He'll never get the nomination"
-Oh my god he won the nomination.
"He'll never be President"
3. Based her slogans on vague platitudes and cliches.
"Stronger Together"
What the fuck does that mean? How does that connect with the average American that just lost their job?
"Break Down the Barriers"
No policy substance, nothing!
^^^^ This explains everything about the Hillary Campaign. I don't get what half of that means. No policy substance, no plans on what she was going to do for Americans, nothing.
4. She's massively corrupt
The American people look at her and see an ultimate, establishment, insider. The Clintons over the years have raised over 3 billion dollars in special interests. People smell it on you. They look at her and go "she's not looking out for me at all." She loses to the person who says he's an outsider in Donald Trump. Scandals galore/wiki-leaks, rigged primaries against Bernie Sanders.
5. She became the ultimate fake/scripted politician.
Scripted, reading off teleprompters, fake talking and using cliches and platitudes. This is the age of the internet son, you got to catch up! People are yearning for realness and authenticity. People look at that and say "this person is not going to fuck me, you know who is going to fuck me? The person that's all polished and fake (Bush, Rubio, Clinton, O'Maelly)