Here's a playlist including some songs I think would suit this story perfectly:

Damn Good Girl -> Yunsae
Stress -> Kim Hyerim
Dear Tomorrow -> Hui
Youth -> Lee Changsub
Nineteen Eighteen -> NavyQuokka
Who I've Become -> Heo Hoykyung
everything is bothersome -> 0415
Deviation -> JAURIM
I'm not a hero -> IMSEMO
Playlist -> LAS
I'll Show You -> Ailee
Small Girl -> Lee Youngji (feat. D.O.)
Fighting -> BSS (feat. Lee Youngji)
Baddie -> IVE
Misfit -> NCT U
Girls Never Die -> tripleS
ATTITUDE -> IVE
WANNABE -> ITZY
ANTIFRAGILE -> LE SSERAFIM
404 (New Era) -> KiiiKiii