Resent my parents but want to show them respect

My parents and I constantly fight, and there was a good 2-4 years where things were calmer but things have gotten bad again and I’m just reminded of why we fought so much when I was younger in the first place.
1. My mom cares less for peace in the house than she does for her personal peace. If me and my younger brother, who she lets get away with everything including calling her things like stupid and dumb and making fun of her for not having a college education (all of this is to her face), fight, it’s always me who’s in the wrong. He is 10 years old. Even if I tell him off for calling her names (I don’t call her things and I never will) she’ll still find a way to get mad at me. Really, all of our fights revolve around me and my little brother arguing and it leads to her telling my dad to take me to work with him, even though I have to tutor and I hate their workplace because they work at a convenience store that sells things like cigarettes, vapes, alcohol, and lottery. I understand that they have no other choice when it comes to work, but in my opinion, I am allowed to hate it there and want nothing to do with the place. Furthermore, all of my fights with my brother are caused by him bothering the cats (pressing down on their backs, squeezing them, patting them really hard, not leaving them alone while they’re asleep) or barging into my room to either make nonsense noises or talk about among us, or me telling him to go do what my mom told him to do 5 times already instead of bothering the cats. He’s disrespectful to me and all of my sisters.
My mom also calls me selfish for not wanting to go to the store when I have to tutor, because I have to do it in the old backroom on the floor, which makes my back hurt. I tutor because I need volunteer hours to get a full ride scholarship so my parents don’t have to pay for my college, and they’ve been pushing me to get the scholarship as well, but suddenly there’s a problem when I’m working towards doing just that. If I go to the store, its with my older sister who works, but I don’t, because I’m not old enough to sell alcohol or cigarettes or lottery. They send me there just to sit around, basically.
As for my dad, if my younger brother shows any disrespect, he’ll say stuff about how I’m his role model when I’m not even there or even if it’s something I have never done or said. On top of that, he’s the parent I barely fought with since things have gotten bad again. So it kind of feels like a betrayal.
He threatens to get rid of my cats, who I love more than anything. This is because my brother bothers them when he’s supposed to be doing other things. Instead of punishing the human who can control his actions, he goes after the innocent animals who don’t even do anything. Once, he actually released my indoor cat by opening the door at night and would yell at anyone who tried to go get her, because my brother was chasing her around instead of going to bed. My sister went to get her, and he locked her out, and this led to a huge fight (this was in March).
Both of my parents had a whole form filled out to send me to a behavior correctional place and would threaten to send it any time I acted out when I was younger. I wasn’t even half as bad as the kids who were meant to be sent to that place. The things I did as a kid that they didn’t like: memorized Quran slowly and talked back to them. This was NOT an Islamic place. Whenever we fight, I still think about how they were more than willing to send me away and get rid of me, while they’ve changed up their parenting methods after my brother was born and go lightly on him. Now he’s even worse than I was; my sisters agree. Aside from the form, they also talked about sending me to a foster home.
Oh, and I was hit as a kid, but they stopped hitting me after I reached puberty.
All of this led me to becoming distant from Islam before getting pulled back by one of my older sisters, which I am more than grateful to her for. Now that I’m older, all I see is their flaws both now (see my last post for a little more context) and then.
So now, I can’t help but resent my parents, but if I keep disrespecting them as I currently do, I’m destined for Hell. How can I change for the better, and show them respect because it is what Allah has commanded us to do?