also invest in lead and fences and bushes to hide things
Indeed. There are much larger garden pests than potato bugs. Some with 2 legs.
Look for lamb’s quarters if you can - they grow wild, or you can buy the seeds and plant them yourself. Seeds and leaves are edible, but one of my favorite things about them is that they don’t LOOK like vegetables. They’re weedy and tall and spready and nobody thinks twice about them. So I like them as a fallback.