One issue that sticks out to me is you have colour balance issues. It's too warm. The lighting isn't good.
Read this about adjusting white balance:
Hi @frank5E39 ,
In addition to what is said the first to third images were either taken too close, or too much of a shalow depth of field. Too much of the subjects are out of focus. The composition of the second image is way out. Cropping the peppers was not a good idea with so much blurry negative space. The fourth image is the best but there is a white balance issue. The framing has a red color cast.
Photographer and Nutrition Author