I dont think she cares about any charting bc she always release at the most awful hours, it's like kiddy game to her
Exactly! She only cares about her fans! Some singers, mostly groups (thanks to their agencies) trying hard to be in TOP10, and there are artists like IU (not just her of course) who's making music for her fans and because she loves making music. Music is ART, like any other, if you only care about Awards and stats, you're not a real artist. Simple as that.