In most cases I code to build a model, sort of like a maths equation where I input the data and the output is some plot, with a line of best fit or some output that details how strong relationships are in the data.
I can also build things like apps that are really useful for exploring data and different data types.
It sounds like you know quite a lot about coding yourself! R is a free to download programming language that could be one to bear in mind for when you get older! It’s good fun and there’s loads of free resources to help you learn it.