Parents using heavy double standards
Ok so I know that within the normal parent-child relationship there are foundation double standards such as swearing, eating certain foods, bedtimes etc however I feel like my parents think i'm extremely naive when it comes to how they use this power as my parents.
Parents are meant to be good role models, and the stuff I listed before are basic things, however it drives me crazy whenever my parents tell me off for something they do regularly, with no regret. Like my Mum tells me off for crying whenever I'm upset but if the slightest thing goes wrong for her she's allowed to burst into tears and god forbid anyone not feel sorry for her. Also she gets mad when I don't laugh at her sarcastic jokes (which she makes A LOT), but whenever i'm sarcastic she calls me a sly bxtch and that i'm being rude.
Also my Dad constantly tells me off for lack of consistency with my effort in school (i suffer from multiple severe mental illnesses that stutter my work rate, he knows this) yet whenever he has the slightest cold or anything he takes weeks off of work yet tells me to "get over" my problems and to stop being so selfish
Idk how I feel about bringing this up with them because I don't want to just seem like an angsty teen which they call me a lot. I have a big fear of acting naive or being hypocritical so I just wanna know if this is a normal parent thing or not