Others have already given you good answers so I’ll weigh in on the emunand / not getting banned thing.
I spent a long time trying to get the emunand set up and working on my switch but kept hitting some sort of error (it was almost a year ago so I don’t remember specifically what the issue was). After a while of trying I realized that I was trying to avoid getting banned from an online service I never once used and never planned to use, and now I just use the switch in airplane mode. I’ve read that the system keeps a log of what’s been done and will upload it to Nintendo if it ever reconnects, at which point I very well may be banned, but I don’t really care enough. Being in airplane mode makes sure the switch can’t try to auto update itself as well.