with your budget you're not gonna get anything great. my idea is a middle ground, you get a decent quantity of clothes at reasonable quality.
set out 6 outfits, shirt pants shoes etc
use the internet to find good fits and ideas. simply looking on clothing sites and what they are modelling in, FA of course, and pinterest if you get desperate
try to keep more expensive items as a multi outfit item (shoes, coats)
once you've done that you'll have yourself a shopping list, now just find the items you need at the right price, go cheap with simple items like t shirts, invest more in things like shoes and pants.
6 outfits should be
winter outfit- layers, scarfs, big coat, hats, the key is warmth and layers. boots
summer outfit - thin, loose, light shoes t shirt, super simple, the key is light. really easy cheap look to get
casual outfit - similar to summer but maybe go for jeans instead of shorts, same shoes as summer, a hip length jacket
business outfit suit- interview kind of shit for when you need to look professional and smart, a trick for saving on a suit is to buy something thats not pricey and paying for it to be tailored, so long as its well fitted even a cheap suit can look good enough.
comfy outfit - loose clothing, jumper, pants, light trainers. something you can relax in but still go outside in. good outfit if you're of the twink disposition. the key here is soft materials
you can then mix and match your fits to fit situations, for example
a professional outing, wear a jumper with your suit, turning it into a more smart casual fit,
or mix winter wear and comfy wear for a classic snug, warm in winter look
you can decrease number of outfits and invest more in each look, or go cheap af and have more fits.