So I'm trying to fit a new light fixture that's got the usual black, white, and copper/green wires coming out from the light itself. However, when I took off the old light and looked at the wires in the electrical box in the ceiling, the black and white are self-evident (see photo), but I cannot figure out where the copper/green wire is for the ground:
Maybe the previous light didn't make use of a ground?
Or maybe the ground is that there's a mess of wires that are the third set in the photo, besides the aforementioned black and white ones. This mess of wires is a mix of black and white, all coming together into a twist-on wire connector.
BTW I read this one and some related questions, but didn't figure it out... Can I safely ground a light fixture if the ceiling box has two hot and one neutral wire (no ground wire)
Edit: To the request for better/closer photo, I've added a zoomed-in version of the photo above, hope it helps.