There’s additional stipulations, the most crucial being the dictator thing. It’s also much different in parliamentary governments, where you can vote for a number of parties that oppose fascism who can then form a coalition; most liberal democracies work that way. But it would be easier for the US to adopt ranked choice voting than to switch to a parliamentary system, so first past the post is what I chose to critique.
Except in this case Trump has promised to be a dictator: https://youtu.be/aX0iAmz9iLM?si=PbFCWr6CvpJ-nlXc
Also he was the first president in history to refuse a peaceful transition of power and attempted to overthrow the democratic process.
You don’t go about it from the federal level. States control their own elections. We could use state-level ballot measures to let the public vote for ranked choice voting state by state.