In order to achieve this the easiest way you will need to install two extensions by following these instructions.
These are the extensions: Applications Menu (which will add back the Applications Menu - this extension is pre-installed so you will only need to activate it, not install it), and Activities Configurator (you will need this to easily remove the
Activities Overview button).
Once you have both installed, have opened the
gnome-tweak-tool, and are in the settings panel for the
Activities Configurator (instructions for all these steps are provided in the first link), click the slider which is labelled
Remove Activities Button in order to set it to
On rather than its current state
This will remove the
Activities Overview button and all which will be left in its place will be the
Applications Menu labelled
Applications which will have been created when you installed the
Applications Menu extension.
And here is the final result!
You will still be able to view the Activities Overview if you wish by click on the
Applications Menu and then on
Activities Overview at the bottom or by pressing SUPER. And you can of course always reverse these settings as well as disable or completely remove these extensions in the