The bee kind of blends in with the rest of the image and you only got their butt. It's visually messy.>>3453338
This is better but a glaring issue is the grass in the foreground obscuring the subject.>>3453609
The subject is apparent, but the leaf on the right in the foreground breaks up the out of focus background for no benefit. The background is just a mess.>>3453615
The lighter portion of the bottom left of the image stands out too much. You could have backed up and zoomed in to get a tighter view on the flower with less ground and less of the other flowers so that the subject flower is better framed by the green leaves.>>3453621
I didn't notice anything particularly glaring with your shade of green, and the grain didn't bother me. Really it was the lack of composition, foreground obscuring the subject, messy content, and elements sticking into the frame that impacted it the most.
I understand that when you're waiting for a creature to stay still for a photo you don't have much time to exercise control over the scene, but the problems resulting from it still manifest in the photographs.
Judging by the pink flower photo's speed of a 1/500 second exposure... you don't really need a tripod. Your goal isn't a flat horizon or a clean long exposure or an exposure stack, it's to follow the honey bee and presumably to wander around outside. The tripod has only gotten in your way.
Also in the future try to pat the grass down or out of the way for situations like >>3453338
since bees tend to not give a shit while they're gorging themselves on pollen.