It would be helpful if you could tell us what seems hard… Maybe include some examples? Are you scanning with a flatbed, a film scanner, a dSLR, or a mirrorless camera? What light source do you use? Details matter… a LOT.
In color, there is the challenge that every emulsion batch of every brand and stock of film is slightly different. As a pro lab scanning and color correction guy, 20 years ago, I learned that the hard way. There are dye fading, C-41 process control, lab-to-lab variability, film storage and aging environmental effects, and many other issues to deal with. NLP 3.0 should help a LOT with that.
There is also the challenge of color management. If your monitor is not calibrated and custom profiled on a regular basis, using the appropriate colorimeter or spectrophotometer device and its software, then you chase your tail all around the color wheel. Give yourself a good basis for visual evaluation, especially if you print.
I learned a long time ago to use a color neutral in-scene reference such as a true photographic gray card or a Color Checker chart. It helps to get a reference frame in each new lighting situation. Barring that, you learn to find features in scenes that are reasonably neutral, so you can adjust color in reference to those spots. I almost always expose a series of frames in the same lighting at the same ISO, speed, and aperture. Once I get a scene balance I like, I use it for all other like scenes.
Black-and-White tends to be easier. You’re only dealing with tonality, not color, unless you are simulating a toner or going for a special effect. I generally pick a “Tones” setting that works for a whole roll, or a whole series of frames on a roll, and copy my tweaked settings to like frames. I generally like my B&W scans better than I ever liked my B&W darkroom prints! And inkjet prints from B&W scans made on both art papers and photo papers are phenomenal.
Photography is part art, part technology, and part technique. These are inseparable. No one ever said it was painlessly easy. But it gets easier as you get more methodical and control variables one at a time. What helped me a lot in my early years was keeping a notebook of “causes and effects”. I quickly understood what I was seeing when I did something I liked — or didn’t.