@alsvha I saw that you’ve gotten into K-pop. If you’d like to focus on Korean, I found the “Quick Korean” YouTube channel helpful. Its content consists of four courses taught by the Cyber University of Korea. The first is available in multiple languages, but the other three are in Korean only (though subtitles can be enabled). The easiest way to find them is to go to the channel’s playlists and look for 바른 한국어. Searching for that will also pull up the channel directly.

If gamification is helpful, I would recommend LingoDeer for its focus on grammar. Some languages, like Korean, have more content than others, but the foundation I’ve gotten from the courses I’ve gone through has been enough to either give me the confidence to use a language outright on something like HelloTalk or to facilitate my search for books or other resources.