When you can’t deliver what’s asked of you, tell the truth, and ask for support.
When you get that support, use it precisely for the reasons you said.
When asked for information that you don’t have, say you don’t know.
When asked for information that you have but can’t share, say you can’t share.
When caught up in a lie, tell the truth, and apologize.
Don’t bend; don’t water it down; don’t try to make it logical; don’t edit your soul according to the fashion.
Truth never damages a cause that is just.