Here are the reasons why I think Frozen 2 is better than the first:
Kristoff
I will admit. In the first movie, Kristoff was pretty darn cute, but it wasn't until the second one that the audience really learns who Kristoff is. Frozen 2 shows us that Kristoff is just a goofy guy who has super, big feelings for Anna. When I say feelings, I mean we get to see him sing a whole 3 minute song about his genuine feelings for Anna. Tell me if I am wrong, but the only other OG Disney movie with a leading male singing a song is Hercules singing about wanting to be a hero. Don't get me wrong, I love Hercules and his song, but this is the first time Disney has shown a man SINGING out his lovey dovey feelings.
Anna and Elsa
In the first movie, we don't get much Anna and Elsa sister time. And I don't know if it is because I have such a close relationship with my sister, but every time Anna and Elsa had sister moments in Frozen 2, I about cried. They genuinely show what a sister relationship looks like on screen. If I am being honest, it felt like my life was on screen. With this, Frozen 2 showed me just how real a fairytale can feel.
Elsa
I didn't think Elsa could become anymore feminist than she was in the first film, but oh let me tell you, she did. Before Frozen 2 came out, everyone wanted so badly for Elsa to have a love interest. I didn't particularly feel this was necessary for the plot. But then this left me with a question. What exactly would Elsa's role in Frozen 2 be if she didn't have a love interest? What Disney decided to do with Elsa blew all of my expectations out of the water. I'm not going to spoil anything, but her song, "Show Yourself," makes me cry every time. I've seen Frozen 2 three times so far, and without fail, I cry. It is so, so powerful, and shows how if you don't give up, you can find what fulfills you and your purpose. Something in that song rings in my soul, and because of this, I thank Disney.
The Cultural Aspect
I read several articles beforehand about how Disney made several strong promises to not culturally appropriate the Native peoples in the area in the film. We know from how the past that Disney didn't quite do this well (uh, hum Pocahontas I am looking at you), but in Frozen 2, really did keep that promise. Although I don't know much about Native cultures from this area, I left that movie with so much appreciation.
Olaf's Maturity
Olaf's theme throughout the film is the knowledge that is acquired with maturity. Although this seems like a dull theme, Disney, of course, executes it with comedic charm. Throughout the film, Olaf shows off his new knowledge with jokes, and even sings a song about how things make more sense with age. Olaf is not only funny for children anymore. I think after this film, adults leave laughing knowing how in reality, things don't make much more sense with age.