They didn't tell millions of people that the election had been outright stolen. Not even in 2016 when it pretty much was.
There’s lots to criticize Trump about, but what you wrote is wrong and not in a minor way.
Here's the thing: How can you expect any one to believe on the one hand that for four years we have had an illegitimate president who is simultaneously a Russian agent and Orange Hitler...
and yet tell me that 2020 was a perfectly run election?
Are you telling me that patriotic Americans across the country would not due their duty to remove an illegitimate President by any means necessary (including fraud)?
I'm not even saying 2020 was stolen, but the cognitive dissonance in saying 2020 was legit but 2016 was not is massive.
(The US has interfered in other countries' elections before, of course.)
Yes, they engaged social media campaigns, although I don't think it was enough to influence the outcome of 2016.
But many people are convinced it was, and that believe that Trump has never been a legitimate president. Do you not think people would take steps to prevent an illegitimate president from winning re-election?