Look on the reaction arm to identify the hub. It should be clearly stamped with the brand and model number. I can provide a detailed drawing if it's a Shimano. Then when I explain which pieces to
leave assembled it'll be easier for both of us and more clear for you. Yes, disassembly begins on the drive side, but the guts are removed from the non drive side.
I'd bet that the hub is not damaged.
But if it is, replacing the entire thing with a brand new one is around $20.00. 