Let me explain, I'm from Saudi Arabia, and I'll tell you 2 Real stories, both of these people went with my brother to the same medical school:

boy number 1, both parents are doctors, as well as most of his uncles and aunts, lives in one of the richest neighborhoods of the city, went to a private school ( here, public schools are just houses rented to be schools, my brother literally spent his entire 10th grade in a kitchen), went to classes for college acceptance test, his father knew every teacher in the college, he got accepted and graduated and got into an excellent regency program, that doesn't mean he isn't a good student or he doesn't deserve this, but as you see, his circumstances helped.

boy number 2, both parents died, lives with his uncle, went to a public school in a very bad neighborhood, self-taught English because here you can't get accepted to college unless you're fluent in English, so you either go to a private school, or take some courses, or teach your self, struggled to study for college acceptance test, he is the one responsible for his siblings, and doesn't even own a car to commute to medical school. but managed to get accepted and graduated and got into a good residency program.

the point that your circumstances play a major role, maybe this is a bit of an extreme example, let me be the example. but I don't wanna give too many details.

I'm an 11th-grade student, the youngest among 7 siblings, from a middle-class family, none of my parents or their siblings went to college and most of my cousins too. my 6 older siblings all went to college, we all went to public schools, and I went to a fancy private school since 7th grade on a 75% scholarship commuting 1.5-2 hours every single day.

Almost everyone in this school, except for the scholarship people, comes from a pretty rich, academic/ medical family (who can afford 8000$ tuition a year?).

I'm passed the (they're so rich) phase, but what I can't get over is how their gonna have so many opportunities that I can't have due to their parents' social positions, money, them being open-minded, etc...

let's take a simple example, at least a quarter of my class was born and raised in the US, (academics do grad school in the US/Canada. so they're fluent in English and no matter how much I try to learn and teach myself, they're simply better. and they don't have that stupid Arabic accent that I have.

another example, a lot of my friends are going to study abroad when I can't, and I totally could, I have high grades enough to get to a full scholarship, and every teacher says I deserve to, but I can't, just basically bc my parents said no.

let alone their chance at getting accepted in college is higher bc of their family positions, and getting a job too.

and they're way closer to the school and don't have to commute.