The words often translated, “Thou shalt not kill,” are generally understood to mean, in the original Hebrew, “Do not commit murder,” and the distinctions between “killing” in general - including killing animals - homicide, and murder are broken out in the laws of every culture.
Bearing false witness “against” your neighbor implies an intent to do harm to the neighbor. Telling your neighbor a “fish story” is not going to harm him. We do have to watch in distinguishing between a “neighbor” and an “enemy,” because Jesus overturned the common understanding of those categories. However, if you consider that the Nazi officer is your “neighbor,” you are doing him good, not harm, by not giving him information that might lead to his harming an innocent person.
We often view “doing good” for a person as “letting him (or helping him) do what he wants,” but that is a very simplistic viewpoint. Your child wants to eat dog poop. Do you let him?
Kids want to eat candy all the time. Letting them would be no different than letting them eat dog poop if that’s what they want. We often confuse right and wrong for what feels good and what doesn’t. That’s the deception that allows evil to exist in goodly form. You just have to look a little below the surface. Very often wrong things feels good. Those are the paving stones along the broad road that leads to destruction.