heres an example, consider i was using a tripod, i think the picture, though i like th ecomposition , the results form the lens and camera are uninspring, uneditied raw lightroom jpeg export , f10 iso 100 24mm.
The first thing that I noticed was all the empty space in this photo. With the 24mm at that distance, the pyramids look rather small, which IMHO is why they look uninspiring. Did you try the 100mm from that location or get closer to them?
Also, when shooting in the middle of the day, the sun makes your subjects look flat, which is why you don't see much detail. Shoot earlier in the morning or later in the day, when the sun is lower in the sky, to get better lighting and warmer colors.