I also use Rectangle, the same developer also make https://hyperkey.app https://hyperkey.app which works very well in tandem with it (you can also get the same

I also use Rectangle, the same developer also make https://hyperkey.app https://hyperkey.app which works very well in tandem with it (you can also get the same features using Karabiner, but I like how polished and plug&play Hyperkey is)