Though I haven't deleted my social media accounts, I don't use them at all even on an occasional basis. I have them for reaching out to my acquaintances/old friends, access content behind login(when I've been shared with their links), etc. After watching The Social Dilemma(1), I've grown even more averse towards social media.
Many regular social media consumers feel that they get useful info out of it along with their entertainment content. Consider this, there are specific sources to get entertainment-netflix,local newspaper website's movie/gossip section,etc. And if one is looking for useful info, the chance of finding the info that is really useful/timely in the specific moment of their life is more via a web search than their infinite feed in their Facebook/twitter/instagram. If you really need an info then you wouldn't rely on random chance/luck that's needed in finding that in your feed.
Here in India, WhatsApp is ubiquitous, it is kind of used as a work chat as well when people are logged out of work MSTeams/Skype. So I have WhatsApp installed but I don't go to it to browse the status messages/pics people post, no matter how tempting it is :). I use other more privacy friendly apps for messaging with family and friends.
It is hard to tell people to stop using social media, sometimes people find it offending/intrusive. But the perspective of life changes if you don't use social media. You seem to have time for more things in life.
We also have to admit that many don't have the luxury(work/professional reasons) to avoid social media altogether.
1- http://thesocialdilemma.com