Why Did She Lose?

I have thought it in these days why Hilary Clinton lost. I don't have any politic opinions on domestic issues in the United States, but I feel the reasons would be important for our business and life.
When she started her presidential campaign, I thought she would won for the democratic party's race because other candidates were not more famous than Mrs. Clinton. She seemed to have too much ambitious, but she would become the first woman president. I thought she should have.
However, she had lost advantages day and day... Why?
I'm looking forward to reading some analyses.