Mac comes built in with those shortcuts just by holding command. Command left and right is home and end. Command up and down is page up page down.
And yeah there are definitely some holes? But Karabiner-Elements closes them up better than anything on windows does.
For navigation by keyboard you need to turn off a bunch of the animations and it’s very very snappy. I use Hammerspoon and can jump between apps faster than on Linux and windows.
Probably a Scandinavian country if I had to guess.