Will FIFTY FIFTY stay afloat like STAYC or will they sink like WEEEKLY?

It all depends on their management, but with JTBC and Warner behind they, I'd say they will be fine. Their discography at very least, since it's been solid even before Cupid.

Sink

Sink but only time will tell. Its kpop STAYC has the visuals in addition to their GP-friendly music and BEP. They also already built up their fandom earlier. The competition these days is very tough for gg compared to when groups like ITZY and STAYC debuted. They would have to be very lucky to stay afloat.

Sink

Afloat. Did Weeekly enter Spotify Global or Hot 100?