Hillary is on record in believing her 2016 Presidential election was stolen from her, she says so just a few months ago (August 20, 2020 twitter), which is 4 years later after her "concession" message.
And that tweet, Hillary Clinton did not say the 2016 election was stolen. Here it is:
“Don’t forget, Joe and Kamala can win by 3 million votes and still lose. Take it from me. So we need numbers overwhelming, so Trump can’t sneak or steal his way to victory,”
There's no claim, open or implied, that the 2016 election was stolen. There's only a correct prediction that Trump would try to steal the 2020 election, as he did try. So, are you incapable of reading English, or is the dishonesty deliberate?
None of the Trump cultists here have been able to demonstrate even one Democrat of significance claiming the 2016 election was fraudulent. They're all lying about that. Some are lying deliberately, though most are just brainwashed and stupid.
Again, the two sides are totally different. The Democrats don't make up lies about fraud when they lose, and the Republicans do.