Can any other eldest daughter relate to resenting her younger brother at times?

My brother has always been smart, wonderful and sweet. He's grown into a really kind young man. We have a 6.5 year age gap and I was the only child before he was born. As I'm sure you guys can relate to, I struggled with the adjustment to a new sibling and we bickered a lot as kids. I've worked for many years to try to get along better with him. We're both in our 20s and although we clash, we're also very close and get each other very well. I feel horrible because Ive struggled for most of our lives with seeing him given more patience, lenience, at times financial support, and many privileges at a younger age than I did. My parents usually shut me down when I express the reasons why the dynamic bothers me. They expect more from me due to my older age and my dad admits that he lets my brother do things he wouldn't let me do. He refuses to explain why but brags about my brother being so independent and would tell me he planned to take my brother drinking when he turned 18. He couldn't understand why that bothered me, who waited to regularly drink until 21. My mom tends to downplay the dynamic, but as an example: she's always criticized me for wanting larger portions at restaurants, etc. Meanwhile, she never finishes her restaurant meals, always saving half for my brother. She doesn't acknowledge that she does this. My mom also screamed at me while reaching me how to drive, and I've always had driving issues.I still remember the angry screams and insults. I don't drive anymore for many reasons, which is a pain occasionally but best for my anxiety. My brother was not screamed at and is the exact opposite. He's very comfortable driving and when I did drive, my parents let him hog the car. He also got to drive himself to high school because my mom had two cars. When I was in high school, my mom shared a car with me and worked from HOME, but would not let me drive to school, only sometimes to work.

This is narcissistic to say, but I've been jealous at times because my parents have always seemed to prefer to treat us like same-aged siblings instead of letting me feel like I'm an older sibling with special privileges. Ie: if he was 9 or 10 and not old enough to be left home alone, my mom would make BOTH of us go to my grandparents to be watched, so I felt like they saw me as 9 or 10. My brother is not of drinking age and won't be for another year, but uses any chance he can get to pressure me into getting him alcohol. On my birthday last week, during dinner, all he could focus on was getting my dad to order him cocktails. My parents told me to let it go when I got annoyed because he deserves to drink too.

Can anyone relate to any of this? I'm feeling like the worst sibling ever for feeling these feelings for so many years.