Is it possible that my ceiling does not have joists?

I’m trying to mount a hook in my ceiling. I cannot find the joists on which to mount it though. The ceiling has a popcorn texture, which makes everything annoying.

I’ve tried using a stud finder slightly away from the ceiling, but it seems there are some kind of metal supports as well that trigger the stud finder.

I’ve tried knocking on it. I’ve tried finding a stud on the wall and tracing up to a spot on the ceiling.

I ripped a hole in the ceiling to take a look around and saw that there was some wooden support about 2.5 inches above, but that’s too far away for me to mount anything really.

Is it possible that this ceiling just doesn’t have proper joists?