Can you post pictures of your garden? Taht can tell a lot. Otherwise, might need to know more about how you are growing- in pots, in ground, raised bed with purchased mix, etc.
Lettuce and spinach,
Broccoli and cauli are demanding, need to be well fed, need a lot!! of room for each plant to make those big heads we buy at the market. Celery, also tricky, needs a lot of water, not an easy one at all. But celery leaves are edible. Carrots, IDK. I had luck with mine finally, as a fall crop here, which is a very different climate and soil.
Worm casting, bone meal and soil conditioner may not be enough food for broccoli and cauli.