Hot to make the fn key work like Ctrl EXCEPT when using f keys (f1, f2, f3, f4)

Question

After looking it up I discover I can permanently change the behavior of the fn key - How do you make the fn keyboard button work like a Ctrl button?

But I’d like this to be a conditional change. Specifically, I want the fn key on my macbook keyboard to behave exactly like control except for the fn keys that appear in the touchbar, I want it to still show the fn keys (f1, f2, f3, etc)

Is this possible on macOS?

Answer 1

Consider this tool, perhaps it can solve your problem

https://pqrs.org/osx/karabiner/