style/wardrobe upgrade help needed.

[Komuga]

I'm a 17 year old senior in high school and i want my wardrobe to be a little more mature. My current wardrobe is filled with jcrew, Levis, allsaints, shades of grey by Micah Cohen, and Zara. i would like to switch over to a workwear/1dlk aesthetic(solargarden/El bert/the who/nicelynice/snowman xl), and a goth ninja aesthetic(kgfan5/synthese/spacepope). I dont know how to do this.. what should i buy for basics, because i dont think it would be wise to spend alot of money on tshirts from ro,bbs,L&F etc just yet. Is uniqlo/AA exceptable for basics or is that considered "mall brand." Ive recently bought 2 pairs of nudies(light wash and black pair) and an A.P.C denim jacket. Some of my favorite brands are Nonnative, Engineered Garments, RRL, SNS, Robert Geller, and Stephan Schneider. For boots are Oak Street Bootmakers/Grenson/Buttero/Viberg/Redwing Acceptable, because at my current age 1k$ guidi's, ccp, ma+. Lastly does anyone know the quality on Universal Work's jackets/pants? Any help would be 100% appreciated!