Well, do you think there was ever a point where Trump said to himself, "I know I lost this election, fair and square. But I'm going to concoct a plan to keep myself in power, regardless."?
I'm just curious if you believe that. I imagine some do.
I think when he started the entire 'rigged election' claims years before the 2020 election, he was sowing the ground to explain any possible future loss in the same way he told Lesley Stahl that he created the "fake news" bit "so that no one will believe negative stories about (him)" in the press. It was calculated. But as Mary Trump said, "He's the only person I've ever met who can gaslight himself," which he eventually did. He's to the point that he actually believes he won despite incontrovertible evidence he lost. That alone makes him mentally incapable of being the POTUS.
And yes, he and his cronies calculated a 7 step plan to overturn the election:
""President Trump oversaw a sophisticated seven-part plan to overturn the 2020 election and prevent the transition of presidential power.
1. President Trump engaged in a massive effort to spread false and fraudulent information to the American public claiming the 2020 election was stolen from him.
2. President Trump corruptly planned to replace the Acting Attorney General, so that the Department of Justice would support his fake election claims.
3. President Trump corruptly pressured Vice President Pence to refuse to count certified electoral votes in violation of the US Constitution and the law.
4. President Trump corruptly pressured state election officials, and state legislators, to change election results.
5. President Trump's legal team and other Trump associates instructed Republicans in multiple states to create false electoral slates and transmit those slates to Congress and the National Archives.
6. President Trump summoned and assembled a violent mob in Washington and directed them to march on the US Capitol.
7. As the violence was underway, President Trump ignored multiple pleas for assistance and failed to take immediate action to stop the violence and instruct his supporters to leave the Capitol.