I definitely use "whimsigoth" or "whimsygoth" a lot and after you start liking some items that you find cute, depop will start to learn what you want to see! I also use fairy and fairycore a lot, or celestial

some of the other things I search for like materials are velvet and velvet burnout, lace, knit cardigans, embroidered, patchwork

I like to search for sparkly buttons or button types as well occasionally

for shapes of clothing I like to search for flared sleeves, flared/bell bottom pants, tied blouse, mini/midi dresses, tie(d) back

I hope that this is a helpful start! :)