Yeah the composition needs more work with the last two images. And with the edits, it feels like they were random edits? It felt like there was no emphasis. Like the first original image vs the edit looks like you were just playing around with the saturation.

I do like the composition of the first image. And the color combination of image 2 edit having warm colors on top and cool on bottom making it look like a deserted city.

I would suggest to look into color theory, a quick 30 min youtube video helps alot in creating better visual emphasis. And keep playing around with other edits like bluring for further objects (unless you just want real clear images). Also, idk if its possible to make it more clearer in edits?

Overall great start.