According to what I've come across, BlueSky and Signal are the only general-audience platforms that might be supporting healthy choices. They are my first choice, but I diversify and expand my horizon by also cautiously using Facebook, WhatsApp, and Substack. When Facebook shows me an increasing number of offensive posts, I protect myself by disconnecting from them and staying away for a while. When I return, their algorithm seems to understand the meaning of my response, and feeds me alluring content.