How to create complex graphical UI in mobile software development?

I've created apps in React Native and Android Studio using native elements like Text, TextInput, Image, Lists and so on... But never an app with a complex graphical user interface. As a side project for fun I want to create something with a complex GUI. I've been messing around with SVGs but it is getting nasty, specially considering different screen sizes and positioning dynamic values and animations.

What are the best practices when creating complex GUIs?

For example say I want to create something like this, a speedometer, how would one approach it?

Example:

I understand this is a broad question, and broad questions usually get down voted. I just don't know where else to look, the searches I've done hasn't returned much of anything.

Thank you.