Ohhh boy, I have a list for you! My favorites are definitely Blood Sweat & Tears, I NEED U, Go Go (my #1 fav), and Mic Drop. And many others of course, but this is my really condensed favorites list. The songs that got me interested in BTS were Save Me and Dope (both amazing songs), and what really solidified it for me was Blood Sweat and Tears, so I think those are all worth checking out. FIRE and Not Today are also really, really popular songs by them as well, and in my opinion, their most recent album “Love Yourself 承 ‘Her'” is 100% amazing, every song. Their old songs are still worth checking out though, so don’t limit yourself to their new stuff!!I definitely expected this answer to be shorter, and I know I basically said “listen to all of their songs,” but I hope this still helped a bit!! ^^