How do you separate personal life & peace from school environment and students there? How to become professional in face of adversity?

Hello guys I am looking for advice regarding these stuff. I don't get bullied nor bothered by anyone that tries to make fun of me, and I am also pretty low-profile (but for this school year I might be more visible since we lost a lot of students.)

That's not to say that I am discouraged by it. Rather, I am just feeling irritated of my classmates' rotten behavior they're proud of. I'm a bit older than them due to COVID-19 and life experiences that made me look at their behaviors in another way. (🤣pls don't take this the wrong way)

I just can't stand their behavior of constantly being "dramatic" in front of boys and when things go south; they always blame boys and say some bull about feeling guilty then immediately getting consoled.

Which is why I am asking advice on how I should separate my personal life to protect my mental peace.

Also there were some instances due to being very academically competent, they'd always explode the moment things don't go their own way. They would also constantly say "shhh" whenever we're casually talking in a classroom. This part is a bit important because she and her friends have the role of class president and I feel that they always abuse it whenever there's a slight inconvenience; I find it very immature that they are quick to explode, but then everyone tries to understand them when they slip up. (Admittedly, this school year's a bit unlucky 'cuz they became the class officers, huhu 😭)

I want to maintain a low profile but sometimes I'm on the verge of just calling them out 'cuz of the way they treat some of us when they're mad. They disregard personal boundaries and are quick to drop the pleasantries/honorifics. They also unreasonably shout all the time and it demoralizes me, even when I am really competent in and outside of school, so I can't pull out my best even when they expect us to with the way they behave.

I also heard them shout today, "STAY QUIET IF YOU STILL WANNA LIVE" 😭😭✌️I can't believe I heard it and even I found it really absurd that they said it with such a serious expression with wide eyes.

Anyway, sorry for the long post! I needed to provide context, can some of y'all share insights on how you avoid school drama and be professional inside of school? I wanna maintain my pride and dignity instead of being lumped with their shenanigans; I know how to get along well with everyone no problems. I'm willing to make changes in my mindset, which is why I asked this question but I'm looking for any useful advice that y'all could share!