Oo not sure about translated Korean novels but there’s a great collection of books you can download as epubs/pdfs on Anna’s Archive. May be there, or you can ask around in related reddits.
Oh for sites I usually just use NovelUpdates and then sign in for the links!
Ah yes i've tried this site before but it collection of Korean manhwas are bit small , thank you though
honestly, for epubs it was novel translation servers -- i'm not active in any of them anymore since this was circa 2021 but people would share around so many ropan translated/mtl epubs everywhere. but mostly, i second novelupdates for reading novels! no idea where you're looking, but NU undoubtedly has one of the biggest collections of translated korean novels online
nu webnovel (aka korean novel) link--> you can sort by genre or whatever if you'd like here!
https://www.novelupdates.com/ntype/web-novel/?sort=4&order=2&status=1
Where do you guys be finding the epubs or sites to read novels?