People will agree and disagree about her vs Sanders, policies, etc. And they have varying opinions of Clinton, and she can't do much to change that because of how long she's been in the public eye. But how she ran her campaign was entirely up to her.
It wasn't just Clinton's campaign that was awfully run, it was the whole DNC who screwed up by conspiring to make her the candidate.
less awful than the winner, so I doubt this is why she lost.
Yes, she'd be far better actually doing the job, but it was clear to anyone with any knowledge of politics that she was the worst major party candidate, as a candidate, in a very long time.
...and the NYT and other newspapers run front-pages saying "Clinton 85% likely to win". I can't imagine a better recipe for fostering voter apathy and absenteeism.