I'm a professional photographer, I've been to national awards, and I've spent time looking at the winners. I haven't entered any myself, but I know the standard of work that's produced. I say this so you know my context, and what I'm comparing your work with - the best in my country.
Design, header, and typography all amateurish to my eye. The lion photo on your home page is out of focus.
I'll say this as nicely as I can... your work isn't at a professional level, and probably won't be without a few years more development. Focus, composition, posing, lighting, they all need work. They're not bad photos, they're just not professional level. I would be surprised if you sell any images for any worthwhile amount of money.
If you want to sell a landscape image you have to make images that most people can't even imagine taking it. If someone can stop their car and take a photo in the same place then the image you show has to be exceptional. Some great landscapes are taken at sunrise, fewer at sunset as people can take sunset photos themselves as they're awake then. Many are taken in inaccessible locations. I know of one photographer who went back to the same location multiple times per week for three years to get the image they wanted.
That pier photo isn't good. The pier (or dirt, or whatever it is) is difficult to identify. It leads the eye, but it leads it nowhere. Shadow detail is poor. The sky takes 1/3 of the image but it's not an interesting sky. Most of the image is dark blue featureless water.
Keep practicing, keep asking for critique (on individual images, not all of them), you'll improve.