Can't find the key

[AexaDe]

I'm trying to decrypt a .DDS file with the CCZP header, but the code can't determine the compression method it throws the error "unknown compression method 0x9D". The game is Rules Of Survival by Netease Games and the executable seems to be compressed since Ghidra and IDA won't tell me much, only using a debugger at runtime (x64dbg) seems to give a clearer view, how can I get the key? Thanks.