The shot was taken in a hurry, and no time to expose the image correctly. So, I had to fix that somehow on editor. I first tried Nik Collection, and got some nice results. But then I decided to try LightZone for Linux. I have used LightZone before, but I no longer had it on my new Linux laptop. So, I went through the trouble to install it and tried how it would help me to improve the image. And it did!

Camera details
Camera: Canon PowerShot G5 X
Exposure: 1/60 sec.
Aperture: f/4.0
ISO: 125
Focal Length: 15.2 mm (35 mm equivalent: 41.8 mm)
Editing: LightZone

Original and other versions edited with Nik Collection