[reayn]

First and foremost, they should work everywhere, especially the places you describe, almost every native widget (even in third party native apps) should support the readline bindings.

If, however, you desire more control, you can use Karabiner-Elements [0] and one of the many [1] community made emacs-like configurations to have this behaviour system wide, these also add many many more keybinds (such as C-w to delete last word) to further emacsify your workflow!

1. karabiner-elements.pqrs.org

2. https://ke-complex-modifications.pqrs.org/?q=emacs