I believe that there are two main reasons why Hilary lost in the elections. In 2008, Hilary Clinton didn’t win the bid for her party’s choice. Instead, that went to Barack Obama. I think that Obama won the democratic party vote because he stood a greater chance at winning the presidency. He had a lot more experience in politics directly than Clinton. Clinton had been a senator since 2001.
Also, in 2016 she lost the election, but she was much closer to winning. Often times, candidates don’t win the presidential election during their first time. It takes two or even three times before they can become president. She won the candidacy for the Democratic party in 2016, but she lost the election probably because Trump gained more popularity near the end.