I have a LinkedIn account as a professional. I might have a Twitter and/or Instagram account that I opened years ago when asked to evaluate the platform(s) as a work-related assignment. Otherwise (discounting PF.com) I have no presence on social media as I don’t have any other use for it. My wife and kids are on it quite a bit however so I experience the drama and other nonsense second hand. I’ve noticed that most but not all users of the medium fall into a few categories.
The first category I suppose are business owners. For the most part these are people who appear to be using the platform as an avenue to advertise their products, and their content reflects that. Then there are those who are using it for personal reasons but for the most part they restrict their content to that which is useful for connecting with other friends and like-minded people. Overall their usage is probably mostly benign. Finally, I've seen a few exceptions where the medium is used as a way to bring encouragement into the lives of anyone who reads it.
That seems to be where the positive use ends as far as I can tell. From there the rest of the types of users swirl down into the cesspool of the Internet, where self-aggrandizement, narcissism and virtual-signaling rule the day. Some people appear to see each day as an opportunity to find their next social media post, and they live virtual lives that are staged just right to sell an image of success, happiness and prosperity. Others just need attention and every post reflects that. Then there are those who take a break from their busy lives to lecture the rest of the world on a moral or political issue. Finally is the incessant propaganda and fighting over politics.
I'm not sure if someone has claimed a name for it yet, but there's a very apparent relationship between the degree of physical and logical anonymity that a person perceives and their willingness to post nasty and vile content. Even on the NextDoor app, where people's names and addresses are often available, you'll see conversations that would probably never occur in person, either because of the propensity to avoid people who act like that in person -or- of the possibility of having your teeth knocked out in response. When almost total anonymity is available - such as in the comments section on a political site for example - well, let's just say that "love your neighbor as yourself" is absent.