Anyone who can help retreive funds, all help is appreciated. Reward in terms of percentage of retrieved funds is absolutely possible.
I'm sorry for your loss. It's impossible to revert the money that was stolen by the hacker. The only good thing to do is to avoid using ledger.
There have been a lot of cases related ledger's hack. Ledger is a flawed wallet.
There were many victims telling Ledger developers about this, but they never cared.