Well at least she cares enough about music to release something once in a while.
Most idols are simply in it for the 'celebrity' life, and if they find it from acting, instagram modelling etc., they drop music-idol work as though it never existed for them.
As to Suzy, it is not as though she had the reputation like Taeyeon, IU or even Eunji when it came to singing.
Wonyoung is the perfect contemporary example, how many are into her for her vocal-musical abilities?
In these cases, the popularity is entirely on their beauty and brand image.
So it is not surprising that her song (subjective liking apart) aren't firing up the charts. Her popularity will ensure that they chart decently as long as they are infrequent. But that is about it.
If she truly is into music, then it sucks for her, because her beauty itself might be the obstacle for that and she will not be taken seriously.
And time - even if Jang Nara or BoA - massive hit makers of the past, release anything new today. It is doubtful that the song will achieve heights relative to their reputation.
K-pop fans today, aren't even aware of Infinite, SuJu etc., what will they remember of MissA.

i will listen and pretend is