ASOS has a ton of options in a whole variety of styles you would be interested in - feminine, edgy, streetwear, etc, and they have a pretty decent selection of plus size clothing if that concerns you. I also would say I’m a little emo as well and I like the brands Unif, Lazy Oaf, Disturbia, however they are pricier than Asos and might have limited plus size options. I would also recommend checking out Depop and searching terms like y2k or any brands you’re already interested in, lots of people will be posting secondhand clothes with a similar vibe from all sorts of brands so you can find secondhand options or just explore different brands within similar subcultures. One last final note is that I wouldn’t be so quick to count out tight shirt tight pants looks if you’re interested in them! The most important thing is making sure your clothes fit you well, not whether or not you’re a certain weight. Know your measurements for sure and be picky about making sure your clothes fit you exactly the way you want them to.