I unsubscribed official mods, but they will came back sooner or later, all of them.
I want to know the solution, too
Subscribe to the mod again, let it download 100% - wait untill the download is complete, then unsubscribe in the mod manager.
This issue usually occurs when you unsubscribe before the mod is fully downloaded.
I believe I’ve heard patches keep re-enabling the official mods. If I read this note from DodoNotDoDo - Age of Empires Dev (Microsoft) correctly, it looks like a fix is likely coming relatively soon:
You can read through that thread to see if it accurately and adequately captures the issue you describe.
As well, maybe Lakiicz message helps, too