To use the left win buton to open Whisker Menu in XFCE4 and for keyboard shortcuts.
In keyboard settings change Alt+F1 to "xfce4-popup-whiskermenu"
With ksuperkey (wrapper for xcape):
yay -S ksuperkey
put in autostart:
ksuperkey
For arm ksuperkey is not available,
so take xcape:
sudo pacman -S xcape
put in autostart:
xcape -e 'Super_L=Alt_L|F1'