The only way to stop Trump/Trump’s lying is to take him on head-on. Tell the truth about him, make him have to follow the narrative you’re setting. By bringing up stuff he doesn’t like and repeating it over and over again (Epstein, losing in 2020, etc. ), maybe even going further and saying Marla Maples dumped him or something like that, stuff that would, in his eyes, make him look weak.