
i'd suggest you start with either young forever album or the most beautiful moment in life part 1 and 2 album, followed by wings album since it had each of the members solo and you might connect more with their personal songs and find a style that you like. and then you can follow that with you never walk alone album.
i personally prefer the old era since it was more unique but their music might appeal to you as they are now. the reason i suggested those albums was because i felt the most artistry in them.

Let me know
Hold me tight
Lie
4 o'clock
So far away
Lost
Cypher 3
Augst d
Spring day
PERFECT MAN (COVER)
mic drop
Blood sweat and tears
Baebsae
WAR OF HORMONES
house of cards
Serendipity
This has nothing to do with manga, but do you like BTS? If so, could you tell me your favorite song? I wanna listen to their music but I don't know where to start (●'◡'●)ノ