DAE here have abusive Gen X parents?

I’m not a fantastic daughter myself, I’ll admit that. I still let my mother cook my meals as a 19yr old even though she has health issues (physical and mental,) which is wrong, because as someone who works and is in school it’s easier for me. I just now asked my parents where my purse was (they hid it because my brother comes home to visit occasionally from rehab) while my mother was at the doctor’s office, because I need money for food (hadn’t eaten throughout the day) and had $15 on my desk. When I got home my mother was already swearing at me in casual conversation, which I’ve told her in the past I don’t like (complaining about me walking up and down the street with wrinkled clothes before I could say a word, swearing sprinkled in.) My parents are both just so negative. I told my mother this after what she first said, that she is negative, and she said it’s not her fault for being negative when society is negative - that she’s “responding to the environment” she’s in. This is why I don’t feel badly for her. I have depression and lack a few important self help skills because of it (cooking and doing my own curly hair,) but my parents become worse and worse as I grow older. They’re both bottom of the barrel because they don’t want to work on themselves, even though both are in their early fifties or nearing it. They’re the most pessimistic, downtrodden people you’ll ever meet. What I’ve realized as I’ve grown older is that, abusive childhoods or not, my parents are bad people and aren’t doing well because they don’t truly want to do well. I realize now that when my mother told me as a child about how my grandfather was physically abusive, she, although a good mother to me back then, was not taking full accountability for her own decision making and actions. She has never taken full accountability. My parents have had many years to get themselves into therapy. They’ve never done it. Things will end bleakly for them. I understand this and actively try my best to avoid thinking about it.

I was doing fine mental health wise after graduating from high school, but my family is dysfunctional and my parents become worse every year. I broke 3 nails because my mother decided to use the fact that I'd told her a child at my recent job nearly choked me against me by suggesting she could just tell me I'm being too negative when I mention things like that after I told her I don't want to talk to her because she always says something negative (started swearing at me when I came home about my wrinkled clothes.) I make more ($23/hr) at new job. I am a healthier person when not engaging with my family, I truly am.