I hope some fics will address the post-war Fire Nation issue. The Fire Nation has been at war for 100 years, they have probably been taught that the Fire Nation is more advanced and brave than the other nations, so that's why they still fight for the Fire Nation. So in their eyes, Zuko and Iroh are traitors, why should they agree to let Zuko take the throne? Meanwhile, Azula is a war hero after conquering the city they spent days conquering in the past Ba Sing Se, the Fire Nation would definitely want her more than Zuko after Ozai's defeat.
And there are many questions about what did Azula do wrong? Azula brought her exiled brother back alive and safe and got the crown prince title she wanted, but she refused and went back to being the second heir.
As for Mai and Ty Lee, Azula is a princess of course she has a higher status than the two of them, giving orders or whatever, that's her title. When Mai and Ty Lee betrayed Azula at the Boiling Rock, Azula spared them from the death penalty for betraying the royal family. So what are they blaming Azula for?
After the war, Azula suffered from PTSD and had hallucinations of her mother, Azula should have been treated in a hospital facility not an asylum (I guess it looked like a prison), she was also wearing a straitjacket. I don't know if anyone visited her in canon, or was she alone in the asylum with that straitjacket for almost 1-2 years? Then how could she get better?
Not only that, Zuko brought up the title "I am the Fire Lord, and I want you to help me find my mother". Well, and what, in the early drafts of the comic, they actually wanted Azula to go looking for her with a straitjacket??? wtf.
Also, what if the Fire Nation knew the truth that Zuko and Team Avatar intended to harm Azula? If Azula died, how would they react? Not only that, Aang was the one who understood the most about hallucinations, why didn't he help? Katara too, she witnessed the fall but no, she still considered Azula an enemy.
And more importantly, why did Ursa write a letter to Ozai saying that Zuko wasn't his son? If Azula had made this letter public, Azula would have completely won the people's support, but she didn't and left the letter for Zuko.
In my country, they say "A son takes after his mother, a daughter takes after her father".