You have and excellent portfolio. In some of your landscapes the sky is either a bit pale or has too much cyan ( pale blue-green eggshell colour) and this cast has shifted the tones of your other colours particularly reds which are quite hard. Perhaps you could try dealing with the sky and foreground separately in your software.
I often isolate the pale sky with a lasso tool with a wide feather of around 120 to 150 pixels and then adjust in levels, first to darken using the left slider and then adjusting tone with RGB drop downs to adjust colour tone using the midtone (centre ) slider. Then select inverse with the lasso and do the same for the foreground but lighten it. I then try to balance overall foreground tone by using similar midtone shifts on the foreground as I did for the sky.
Hope this helps but you don't need much! If you have a problem send me a message. A