Ban algorithmic feeds and recommenders. Just show chronological order of content from people you follow.
Failing that, squelch viral content (slow it down).
Ban 'likes' and so forth.
Treat all personal data as property of that person. Transmuting demographic data from an asset into a liability.
FWIW, here's my prior answer to your question, citing the reform efforts of US Sen Warner's SAFE TECH Act and Information & Democracy's Policy Framework: