Macros prohibited in fortnite?

I want to create macros on my PC can you be banned for it?

If you're using them alone in creative mode, certainly not. If you also use them on opponents, it is also possible, but very unlikely.

I think you can be banned for it, just leave it and edit as normal.

Yes, and there are many examples of. In addition, I think that you should much better practice to get better then you don't need any