I release ladybugs every year and that seems to help. You can buy them online if they are hard to find locally.

The ones available online are from the western U.S.; depending on where you live, that may be counterproductive to the locally native species that are struggling.

Grow some yarrow, dill, or sunflowers and get ladybugs to lay their eggs all over your garden naturally, and I imagine you'll start to see much better results! Larval stage ladybugs are significantly more ravenous than their adult forms.