Fixing a problem

For a long time I’ve been looking at my photos and thinking to myself they can be sharper, and I just don’t know why they are? is it the camera? the lens? I don’t know. but as I was looking at some of the settings picture setting in helps it might explain something I it seems I might have it on a wrong setting. I did some test shots and of them I got these two when adjusting sharpness. other then the fact coloration looks different I don’t see anything else. So much to figure out.