Yes he did hide the documents. Read the actual affidavit and the 20 month timeline
https://www.nytimes.com/interactive/2022/08/26/us/trump-sear...
https://www.nytimes.com/2022/08/26/us/politics/trump-documen...
It was not accident: Trump claims it's his right to keep his records and even publicly displayed some of them for prestige after demands for their return began. Some "accident"!
It was not CYA: The National Archives and DoJ spent 20 months exhausting all legal means to force the return of the documents to a safe facility. Trump's people according to the facts had around 16 months of escalating demands to actually do the return. Had they returned the documents during any of the many, many demands spanning multiple escalating agencies, it would have been a "no harm no foul" situation and no one would know.
When they finally returned some of the documents, it became evident that there were many more missing and the matter was referred to the DoJ. The DoJ Investigated, escalated and demanded the return.
And even then, surveillance footage shows documents being removed from the room to an unknown location. Despite there being two remaining groups of missing documents, Trump's lawyers signed a document saying there were no documents left (this is obstruction of justice multiple times -- hiding docs after the subpoena, lying about it, etc).
This is when the situation went from "maybe accident" to "definitely a serious crime". The FBI absolutely knew there were more documents, the former President was openly lying about it in court, AND there was a potential second additional unsecured cache of documents that had seen being removed on surveillance.
This is when we get to the search warrant, the final and last straw in a 20 month long quest to return some of the most highly classified secrets possible. And even now after the seizure they do not have all the documents.
>You have no evidence whatever to back up this claim.
Ironic statement from someone arguing directly against the facts while making up narratives like "it was an accident, it was CYA" which Trump himself openly denies. But that's normal for those who defend Trump to find that he has publicly undercut their narratives.
Seriously, it's all in the doc above.
But if we want to think beyond the actual legal filing, consider this article from the NYT ~9 months after the theft of top secret information that we know was classified in a way to protect the identities of American agents abroad. https://www.nytimes.com/2021/10/05/us/politics/cia-informant...