Are we going to have the “Ministry of Truth” to make sure that no direct messages don’t have anything false?
I feel like you’re not discussing in good faith; please try and be sympathetic to the idea that Facebook’s pursuit of ad revenue has an outsized negative effect on our society. You act as though nothing is wrong and any regulation we apply would be completely illiberal. Neither is true.
What I would like is for Facebook to gatekeep "news" posted on its platform. Traditional media does this, it's called "the editorial process" and is--while not perfect--super effective. I'm not saying you can't post life updates or hot takes, but I am saying they shouldn't be mixed with news that's been through the editorial process and held to journalistic standards by professionals.
I would also like people who run ads libeling people to be subject to civil lawsuits, and for that Facebook would need PII for people who run advertisements. I don't know if they already have it; if they do great. They then need to make it available when a court asks for it.