By looking through the photos in my phone, I made some adjustments to the following two sets of landscape photos. The main ones I used were adjusting the brightness, contrast, and increasing the saturation, color temperature and sharpness. Make the new photos become more colorful. And in the second set of images, I also made the images more refined by editing and cropping the size of the images.

before post-processing
after post-processing
before post-processing
after post-processing