There is nothing that I can identify in those photos that would explain what you are experiencing. Some of the things in the photos could be insects, but they are too blurry to identify. I would recommend that you try to capture them so that you can send them to MSU's Plant and Pest Diagnostic Lab. Their website has information about how to use their services: https://www.canr.msu.edu/pestid/index
And you can read about how to prepare insect specimens here: https://www.canr.msu.edu/pestid/submit-samples/#Insect/Arthropod
If you believe that they are active at night, I would recommend putting out a sticky trap in places where you think they are active. They will become stuck to the trap at night and they will be much easier to identify.