a person who lives like trash, and doesn't care to improve themselves.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Low-life is a person who has not evolved past the level of primordial ooze in the scheme of things. A low-life is an opportunist and has no guilt over doing rotten or heinous things. If they hurt the innocent or the naive of course a low-life will blame their victim for not being as low-life as they are.

Kids that post absolute shenanigans on Snapchat. Like “ss if u care about me” in other words meaning insecure

a low, repellent person

someone that has to change her kids food stamp to support her cocaine habit

A person who hangs out in bars, dives, or honky tonk establishments.

A person whose social life depends on booze in smoke-filled, noisy places.