I can't seem to figure out when it's not "Free Ranging", so I just call our setup "Ranging"

We have no proper runs, only fenced yards. Varying from 1/8 to 1/4 acre each. Except for one pen that can also go out to the 1/2 acre out front. The fence surrounding the property is 6 ft chain link. The pens keep them off the porch (except for fliers).
We have a lot of predators here. But we also have a lot of cover by way of trees and bushes. I think that makes all the difference. I'd honestly be too nervous to range in wide open areas.
About 10-12 times a day, the roosters call the alarm, and everyone makes for a bush. Sometimes it's a false alarm, but the drills keep everyone on their toes. Often, we go out to check because it's convenient for us to do so. But if we were away from the house a lot, I wouldn't feel so comfortable.
There are a lot of benefits in letting chickens out, it gives them so much more to do and their relationships are happier.
But if it comes at the cost of losing birds it may not be worth it.
It depends on each setup what the best course will be and there are a lot of factors to consider in that judgment. I would put foliage cover at the top of the list.