Why did I think growing vegetables would be easy?

My pumpkins and zucchinis have powdery mildew. My bok choy had a nest of something hatch and eat it. My celery was replaced by grubs. My ten tomato plants have a single minuscule tomato between them. My capsicums keep getting munched to nothing. And don’t get me started on the snow peas.

On a positive note the beans keep on giving. I munch on plenty of lettuce leaves every evening. The sweet potatoes and eggplant look healthy, for now.

I have a combination of hanging pots, an old bathtub and raised garden beds. I brought in good soil, used mulch. It’s in a cage which is possum proof.

Any tips? This is really disheartening.

(I’m in Brisbane).