I wish i could sugarcoat it for you but honestly us asian females do have it hard, a lot of us aren't allowed to speak our minds or do whatever we want. it's the harsh reality of life and I'm sorry it sucks for you rn. I'm gonna guess you're in your teens so maybe you could think of moving out for uni (if you decide to go) if you really wanna get out of all the rules and restrictions? apart from that I don't know how to advise you in terms of privileges and freedom. I know it's basically impossible to change an asian parent's mindset and, if you try, it usually comes with a lot of arguments and conflict. if you're prepared to go through that then by all means go ahead but I personally don't think it's worth it if you're gonna move out soon.
you should be allowed to at least wear skinny jeans and ankle length skirts, you're right. if your parents aren't letting you wear that sort of stuff maybe you could try explain how a lot of girls wear this sort of stuff around here and you don't wanna feel left out? I think that's at least worth a shot and it shouldn't spark a massive argument if you talk about it respectfully. it's not like you wanna wear booty shorts and a crop top right? (not that that's a bad thing)
also asian parents love respect, I'm sure you know, so I guess as long as you kinda 'kiss up' to them and respect them while you try and talk to them about this then they shouldn't get too angry. hope this helped xx