The word "official" is doing an awful lot of heavy lifting there.
Some power derives from charisma, force of personality, or social fluency. But lots of power, from the perspective of the people it is acting on, derives from or relies on nothing of the sort, and merely requires that consequences can be enacted for failure to cooperate with the power dynamic at play
This narrative is not insignificant. A lot of powerful people love to tell a story where power is just a personal competency, and consequently, that anyone's lack of power in any circumstance is, as the gamers say, a skill issue
We could call a language a social illusion. There's nothing red about the word red. And the distinction we draw between "earth" and "sky" is not one that the universe appears to use in its operation. Language does, however, require us to negotiate symbols, their meanings, and the consequences stemming from them. Like in how I rejected your definition of "official" with a rationale which you may attempt to overcome, accommodate... or just walk away from. And like in how we have structured our interactions so far as a contest of truths with bold and uncompromising assertions, when the option remains available to switch to a search for truth with tentative and attackable statements.
It's exactly with the same with governments and other organizations, all based on language as they are. We make them up. We make up rules for making them up. Occasionally someone hits someone else with a big stick. But although the stick is real, the reasons why we do things, and the reasons why we believe we can do things with these consequences or those, are things we all work together or in opposition to establish. "Official" included.