I'm the one who builds and runs the technical machinery behind all the marketing, the stuff that makes the pretty campaigns actually function. But nobody around me really understands what I do, so when things go right they credit the people up front, and when they go wrong they come looking for me. It's hard to get credit for holding up something invisible.
More people experience this than they realize.
You keep the whole thing running but no one understands your work enough to credit you.
If this sounds familiar, the Library can help you find the bigger picture.