Here is proof Trump didn't believe the whole steal theory himself:
" the former president reasserting himself into the private business on Jan. 15, 2021. Meaning after the November election, at a time when the former president has to this day said, I really won, I am the person. There's fraud in the election. Stop the steal. Even before the inauguration of Joe Biden, within that week, he is obviously anticipating going back into the private sector"
Trump's actions exposed in fraud trial could tank his criminal elections case: Expert (msn.com)