Move Application Launcher Button to Top (left) or right (bottom) of Dock in Ubuntu Gnome

sudo apt install gnome-tweak-tool

start tweaks (afstellingen)

go to extentions (uitbreidingen) and turn on "Ubuntu app indocators" and "Ubuntu dock"

exit tweaks

go to Software and install dash-to-dock

start tweaks (afstellingen)

go to extentions and turn on "dash-to-dock"

go to the dash-to-dock settings and go to launchers and select "Move the applicaytions button to the beginning of the dock"

Now you can turn "dash to dock" off again and may even uninstall it.

To move the dash to the bottom and have a windowslike bottom bar start settings and select "starter" and select the position of the starter.