Keep in mind that I'm a beginner so I may not have a clue

, but to me the biggest problem with the first shot is there is too much sky. You can somewhat edit the rest of the shot to make it look better.
In lightroom: Epxposure +17, Tint +13, exposure +.32, fill light 15, contrast +31, Vibrance ++29, Saturationi +26, cropped some of the sky out. I like the colors in your 2nd picture.