Korean. My husband used to live there and want so master it, and when we got married we started watching Korean TV shows, and I don't read fast enough to keep up with the subtitles, so I decided I might as well start casually learning some 😅 That is the way I learned English. I barely passed the English exam in 5th grade, watched a ton of TV over the summer and it clicked, so since then I've only needed to work on spelling.
I have learned some Korean, but I'm still very much a beginner despite the (to me) impressive amount of days I have studied it!