To those who stuck on root - you can be sure you’re on the right way staying home, and also don’t forget to watch for processes running by root. I hope it’s not much of a spoiler. If you cannot find any interesting file inside home, read all the files again and again, you’ll finally get what you need. pspy might help you connect some dots together, and direct you to the correct path. And the last - always take it easy, don’t get frustrated.
Have fun from process, not result.