Q.Gardening
How do I stop bugs from eatting my collard greens

Pests include aphids, cabbage worms and the harlequin bug. Aphids are usually small, brown bugs that gather on the underside of the plant's leaves.
Cleaning the collards with a strong spray of water can help and you can also spray with a homemade soap spray.
These links have more information.
https://www.gardeningknowhow.com/edible/vegetables/greens/growing-collard-greens.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/homemade-soap-spray.htm