Ahh, doing God's work I see.
Edit: is it difficult tho? I want to get into it, but also build my own, you have no idea how much worldbuilding I've made
No. It's quite literally just replacing (text A) with (text B). It's only ever as difficult as you want it to be, so the scope of the change you want to make.
The only thing you have to look out for is syntax and parsers. So stuff like adding a backslash before all quotation marks and apostrophes, or making sure all of your brackets are properly closed.
Everything I learned is by straight up copying and tweaking existing code, like working with flags, functions, operators, etc.
Any existing functionality can be copied over from other characters who have it, though that requires a bit of searching and a lot of trial-and-error so I primarily stick to changing dialogue, the more complex stuff I'll leave to actual modders.