It's amazing the drop in biodiversity of insects that comes from habitat destruction, monoculture, pesticide (ab)use. As a kid we'd drive across the prairies and have to wipe literal goop off the windshield and side view mirrors at each gas station...
We planted native prairie plants throughout our yard roughly sequenced that something is always flowering. This morning I saw at least a dozen wild bees on one bunch of goldenrod* and nothing on the annuals next to it.
* https://www.canada.ca/en/environment-climate-change/services... (not invasive for my region)