Don’t despair there are small and real things you can do to get insects back in your own yard. Last year I had fireflies in my urban yard. We haven’t sprayed any herbicides, fertilizer or pesticides in a few years. We have planted a few natives and put clover in our lawn. The insects were quick to come to us. So much so our neighbors commented and planted some wildflowers in their hell strip. We got a grant to plant more this year (198 2" seedlings). So you can do something.
There’s more lawn than national parks by surface area in the USA and they have the largest resource use. Be the change
Shade flowers are tough because most are up in the spring but we planted a few. I used Prairie Moon to research my selections but bought from elsewhere. I planted 198 seedlings. Luckily the rest of the area is pretty native friendly so it’s been to push back. Lot of happy people asking questions when planting