Ty Lee overcame her insecurity and found she could be appreciated for her differences as part of a matched set. The one thing Mai ever cared about was Zuko. Zuko found the right path in the end. And Azula? It’s clear she cared at heart.
This is why one of my favorite episodes is “The Beach”.
I hate when I see people say The Beach was OOC or pointless. It showed you a different side of them we would have never seen otherwise. And I loved it. It gave so much understanding to them and why they did the things they did.