Almost everything you've said is completely untrue.
Every president has classified info when they leave
Name any other instance.
they were in negotiation to returning them like happens every time
They had subpoenaed them and Trump would not produce them.
the FBI raided his house to get the documents because they “believe” he has classified nuclear documents
They didn't "raid" his house, they executed a warrant in a very kids-gloves fashion because Trump had claimed, falsely, that he did not have the documents the subpoena demanded.
if he doesn’t this looks really bad on the FBI and DOJ not Trump
We have the inventory. He had Top Secret and even Top Secret/Sensitive Compartmented Information files, which is extremely illegal.