I'm not a photographer so forgive my lay terminology but what really strikes me is how "dull" for lack of a better word all these pictures appear.
None of them seem to have vivid bright colors. Almost like they've all been taken on a drizzly cloudy day or something when you would expect to see some more "pop" in these pictures, especially the ones that obviously have very colorful bright subjects. It's almost like they all have some sort of drab "tint" to the photos.
it has to do with the exposure settings etc, but to be honest the camera isnt too bad for what its worth, just being a camera 1:1 no oversaturation etc (hopefully). It depends on what amount of light you're letting in and what you decide to focus in on.