Change Workspace Via Shortcut Key
ctl + 1 = Workspace 1
ctl + 2 = Workspace 2
ctl + 3 = Workspace 3
ctl + 4 = Workspace 4
ctl + 5 = Workspace 5
ctl + 6 = Workspace 6
ctl + 7 = Workspace 7
ctl + 8 = Workspace 8
ctl + 9 = Workspace 9
List keybindings
gsettings list-recursively org.gnome.desktop.wm.keybindings | grep switch-to-workspace
Switch to Workspace (1-9):
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-1 "['<Primary><Alt>KP_1']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-2 "['<Primary><Alt>KP_2']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-3 "['<Primary><Alt>KP_3']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-4 "['<Primary><Alt>KP_4']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-5 "['<Primary><Alt>KP_5']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-6 "['<Primary><Alt>KP_6']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-7 "['<Primary><Alt>KP_7']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-8 "['<Primary><Alt>KP_8']" &&
gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-9 "['<Primary><Alt>KP_9']"
REF:
https://superuser.com/questions/1717764/ubuntu-20-04-change-workspace-via-shortcut-key