The process for getting a search warrant like that is pretty intensive
First, investigators interview witnesses, collect evidence, analyze phone data, or financial documents they have access to through subponeas/
then the lead agent, writes, what is called a search warrant affidavit. That is usually like 30 pages long, maybe 60. Maybe 100. I read a 300 page one before. It will detail reasons why they believe they need to enter the homes, and what they want to seize, and why they want to seize it. The one for the warrant served at MAR A LAGO is like 60 pages I think. I read it whenever it was unsealed.
That goes to the Assistant US Attorney on the case, he clears it with his section chief, and in a high profile case like that, they clear it with the US Attorney of the district, who is appointed by the President.
Then they take it to a judge, and he has to sign off on it.
Then they organize the actual raids, coordinate with local police. They even sometimes reach out to the defendants attorneys, and let them know in advance. So, at this point the search warrant affidavit is SEALED, and only the judge has seen it, what will probably happen is it will be UNSEALED when or if the criminal charges are filed. They don't have to show everything in the search warrant, but enough to convince a federal judge that they have cause.
it's not like someone just says SEARCH PUFF"S HOUSES - there is a whole process, and if there are mistakes, then that could mean anything found in the house would be inadmissible as evidence.