Gloomy

[Rihanna]

Imperfectly illuminated; dismal through obscurity or
darkness; dusky; dim; clouded; as, the cavern was gloomy.

[Gregory]

[feeling down], [sad], [lonely]

[Rihanna]

Dark or poorly lit, especially so as to appear depressing or frightening.

[Dianne]

unhappy and without hope: