So I guess I misinterpreted what was said on Apple's help pages.
When I started my new Mac for the first time, it asked to set up my iCloud account and it did that fine except my root user name was my iCloud name "crystaltwix" which I did not want. I read this support page and it said to rename the root user account like I would any folder.
I'm not much of a unix/linux guy obviously or this wouldn't have happened, so I basically did
mv crystaltwix crystal killall Finder
in hopes to change the root user to my shortened name. So after doing this, I restarted my machine, and then it asked me to set up my machine like I was a new user all over again.
I was wondering what I actually did, and how (if at all), I can get my original account back.
The commands did not work for me, and I noticed that when I try searching this Mac for something, I can see old documents that were on that user account. So it's like, it hid my folders from me and reset some of my settings or something. I'd like to get my original folders back if possible, or start new (which I'd rather now do since that means I'd have to reinstall my programs again).