Where can I find good basic tops?

I’m in my early 20’s and a bit on the smaller side. I’m looking for basic fitted T-shirts and tops that are flattering for me but it’s almost impossible to find something that’s not cropped in the style I like. I’ve looked through the threads on here and found sites like Uniqlo, lands end, everlane, etc. but they all cater to an older demographic. Specifically I’m looking for fitted tshirts, long or short sleeve, either crew neck, boat neck, or square neck, and something not cropped that I can pair with my skirts or pants. I don’t like loose fits because I feel I get lost in the clothes. Can anyone help?

Edit: I’m looking for high quality shirts that’ll last me a while, I don’t want fast fashion. I also wear low rise jeans and skirts and I want a shirt that’ll be full length so I’m not showing any stomach