Clothes. Where are people buying cute, colorful, fitted clothing?

I'm in the process of trying to update my closet. I'm being targeted on IG with influencers. I really like their outfits, colorful fitted tops and dresses. But then I see it's from fashion nova or shein/temu and it's annoying primarily due to the shipping and refund process. FN only gives store credit. I've ordered non clothing items from shein/temu and it's a tossup if I get the item and I've never tried to return.

I also do a Google lens search and sometimes I do find the item elsewhere but a lot of times it's Amazon and I'm also trying not to purchase from Amazon.

I don't thrift because my stores are overpicked.

Any recs?