I tried to upload the largest jpg file I can get from nef in nx-d software but this site does not accept so big file. So I lowered the resolution to make it smaller for upload. Can't find any info here what is max acceptable size for upload.
When the uploaded image was taken, my camera was set to manual, aperture open to max 2.8 and auto iso (with the shortest exposure time preset to 1/125). I did not do any post alternating or pulling shadows up, this is what the camera exposed and saw through the lens, it was that dark. I had no intention to make the picture look brighter than the original real light conditions outside were.
But you all are right, this kind of communicating does not help much and goes nowhere which makes me kind of tired already. I will find some other way to help myself. Thanks for your replies anyway.