In windows I usually use enter to enter a folder and backspace to back out. It’s not exactly up/down semantic as backspace will go back to the place you entere

In windows I usually use enter to enter a folder and backspace to back out. It’s not exactly up/down semantic as backspace will go back to the place you entered from (eg. search) rather than the logical parent directory. But this still makes much more sense to me than MacOS. The alt tabbing and window switch/minimize/group behaviour in MacOS is quite confusing too!