@TeamYouTube so I was watching a video I had English subtitles on but when I opened another video the subtitles randomly switched to Korean, do you know how this happened by any chance?
Thanks for reaching out. To clarify language of subtitles are chosen by the creator while uploading the video. However, have you tried changing the language by following the steps on the video you're watching: Settings > Subtitles/CC > Language? Keep us posted.