This is a Karabinar element alternative that people use. Karabinar Elements Settings
I’m actually happy with karabiner but I will probably try this as well since it is cross platform and written in rust.
GitHub - kmonad/kmonad: An advanced keyboard manager · GitHub
There is also another software called kmonad. Both of them are cross platform.
keyboard
neru: Keyboard-driven navigation for macOS - Navigate and click without touching your mouse 🖱️ Open source alternative to homerow, vimac, shortcat and mouseless in macos.
github