Just my take and maybe of some help...
You were drawn to a beautiful sunset that's really about the colour not the graphic elements of the images.
Getting the most out of the subtleties of colour and the impression of light at sunset requires, as said further above, quite a subtle touch and usually quite unique lighting (it can be a tough subject).
Also think about the tools you are using and their combined effect. I see a fair amount of clarity, contrast and saturation. All work in much the same way. Contrast works by increasing the difference in light/dark (luminosity) and the contrast in colour (saturation). Clarity is just a sharpening tool that's biased towards mid-tones, it increases the contrast at the boundary edges between two tones (acutance).
The combined effects of increasing luminosity effects colours by adding more black to some, and white to others, over-darkens some and washes out others, they begin to loose their dominant hue (you get the same effect if you over-do the tone-mapping and up the contrast - a lot of tertiary colours reminiscent of a dull day). Saturation increases colour contrast by tending the colours towards pure hues (colours of a single wavelength), it steadily removes shades, tints and pastels.
If you remove some of the red in the first image you can begin to see the
combined effect on colour by adding black, white and reducing pastel tones:
The deft hand comes with being able to separate the amount of colour contrast (saturation) you add from the amount of black and white (luminosity), and also by controlling the amount of white (brightness) from the amount of black (clarity). And by not introducing too much micro-contrast.
N.B. Clarity and sharpening have the effect of giving the clouds a sooty and fibrous texture, clouds are naturally soft. The still water in the sand ripples is a naturally high acutance subject that doesn't generally benefit from any further clarity/sharpening when viewed on screen.