Wow, no, you have that backwards.
Those members of the FBI were more worried about, if anything, giving Trump fodder for his campaign through an unnecessary raid, since the FBI was already involved and already had the national secrets under control.
They knew that Trump and his supporters WANTED such a raid since it would help put him in national headlines and get cheers out of his supporters, who'd use it as evidence that the guy needed to be reelected.
And they were proven correct.
The FBI was already all over the national secrets. They were in the process of recovering them quietly. DOJ insisted on making headlines, and the Trump team reveled in it.