My father got scammed of all his life savings ($360k +)

Initially, my father had stumbled upon some fraud stock trading platform called "Capitalix". He did not inform me about this and when I asked about it, he just ignored and did not tell me anything. They managed to scam him of about $85,000. After this, he stumbled upon a "recovery agent" who called himself a hacker and promised to recover his funds. The "hacker" scammed him of more than $200,000. In between all this process, he stumbled upon some "business optimisation" thing called box-office and Cucker Partners which was an obvious scam, they had managed to sam him of more than $70,000.

He told me about all this after he put in all the money. When I hears about the "investments" he made, it was pretty clear that all of them were a scam. Now, he lost all of his life savings and has no money left. Could anyone tell me any way to recover from this? Can the FBI help us? Any suggestion is appreciated.