Photo rejected - technical issues

Hello,

To reiterate, the lighting is bad! Don't use incandescent light (or tungsten from a normal light bulb) as they give out a yellow light which is what you have in your pics.

So from a photographic point of view (technical issues),  problems with white balance as well!

Read this about adjusting white balance:
https://www.adobe.com/creativecloud/photography/discover/white-balance.html

I looks like you used incandescent lamps.  You might get better results with high efficiency LED or fluorescent lamps which emit cooler light. See below.

https://improvephotography.com/69933/best-light-bulb-for-photography/

Looking at the first two photos it is easily to see that the focus is too soft, the shadows are underexposed, there is some color noise in the background and the coffee bean shadows from the harsh light are not good.