Is it normal these people dont see how toxic they are

Adults who post sad emo quotes on social media all the time stuff like "i'm so sad and lonely", "everyone hurts me", "i'm so messed up" etc etc. They are really desperate for validation and attention and it's cringy to be an adult and post shit like this, literal 14 year olds are the ones who put together the images with those quotes in them. And if you try to talk to one of those guys or gals they're all about victim mentality. The first thing they'll do is talk about how heartbroken and sad they are and how terrible of a person their ex was which is a red flag too because no one just trash talks their exes randomly, those who do are usually the one who was the most toxic in the relationship. They are always involved in drama wether directly or not so they whine about how people always backstab them etc and "drag them into drama". No one who actually hates drama just happens to constantly be in the middle of it. Then they always go to talk about how "broken" they are and stuff like that and just wants love. The problem is no decent person who is mentally stable talks like this. It's already a warning sign someone basically admits to being messed up, that their relationships always end quickly and badly, and that they're always in some kind of drama plus the posting of stuff to make people view them as victims and pity them. People fall for that kinda shit in high school maybe then most people start to at least try to act normally. I dont get why these people are so surprised when they pretty much brand themselves as toxic why when they actually manage to attract someone it's an equally unstable person and shit goes down. At some point most people would realize they're the common denominator.