Denormalize JSON?

[speakers_86]

I am using an API to get a JSON file. I am basically using that file as my database for a C# bot that I run on discord, a chat application. My question is, should I denormalize the data in the file to avoid doing loops upon loops? This file could get pretty large for a text file, so I'm hesitant to do a bunch of loops. Can a lambda expression select nodes without looping through all the parents like XPath? Thanks for any help. First time here, hopefully it's more friendly than the other forum I tried.