To paraphrase a saying, you can't fix stubborn. Especially now, with respect to COVID-19. So much misinformation, such simple rules, so many people misquoting and/or misbehaving.
I'm in good health, but over 70. That places me in a higher risk group so I've chosen to self-isolate as much as I can. In the last 4 weeks I've managed to limit my shopping to 4 times - twice for groceries, twice for the drug store. It helps that I was always an introvert, and comfortable with myself, so for me being alone does not mean being lonely. A credit card and willingness to use Amazon also helps.
But we are being asked to self-isolate, not just for ourselves, but to flatten the curve, to reduce the size of the coming 'peak' and the load on the health care system. It's not just about us. Yet I have friends, Facebook or otherwise, that stubbornly still visit with others, gather in a park, or go out every few days to various shops. Most of them do 'get it', they see why physical distancing is needed, but their need for social contact overrides this. Yes, most places have protocols in place to reduce risk, but the risk is still there.
I've a science background, and see myself as a logical person and a critical thinker and someone with empathy for the rest of the human race. I 'get it'. I've been trying to nudge/nag people, to get them to change, but they don't. And I've decided it's not worth the stress for me to try to change their behaviour. I give up.
Ditto for The Facebook - so many conspiracy theories, so much misinformation, so many arguments. Not worth it.
As the Serenity Prayer advises us:
"God, grant me the serenity to accept the things I cannot change,
courage to change the things I can,
and wisdom to know the difference."