Hope I am not off-topic here. It’s not really a Raw Play thing, it’s more about saving old negatives film.
Film is about 20 years old. Somehow it lost lots of blue. I scanned it with a Nikon Coolscan without any color correction. This is what it looks about:
Here a link the 8bit TIF (~65Mb)
What I did in Darktable was using Tone Curve > Lab Channels > Set the white point in the Lab B (the surfboard) to the center line, and kept a straight line.
That makes the image look a bit more normal. Still, no blue sky.
What I look for is basically to get ‘okay’ with a few clicks. I am aware that one can do much more, but I have a about 1000 images to scan and my aim is not perfection here. A believe the quality of the negatives has quite deteriorated over the the last 20 years, so my expectations are not that high. And some are way worse than this one.