Normal people have friends and family and would like to use social media to stay in touch with them. There are network effects that make it practically impossible to switch. This is not something that can be done with the power of love and well informed agent in the marketplace.
One solution would be to nationalize facebook and other social media and turn them into public utility coops that are run democratically by giving the workers that work there a vote for who and how they should be managed. And give the users a vote.
Everything else is just fantasy. Facebook is forever. You'd need many billions in marketing and advertising to get enough people to switch. And then it will be the same shit.
Unless of course Elon Musk buys facebook, then it will be trash in less than a year.
No I don't use facebook or twitter. But it's more for personal disgust than for morals. Nothing you or I or ten thousand lemmings do or not do will change the rising domination of social media on our civilization. Same as our individual choices won't impact climate change. It's the same illusion that only serves to prevent actual action against a serious threat. Not even thinking or talking about possible solutions. Corporate control of the means of communication is amoral, and accepting it is problematic.
Maybe I'm wrong and network effects can be overcome through a well crafted alternative like mastadon. But capital translates into power for marketing, development, articles and regulation or even legislation.