This is absurd.

Typing “Logitech unifying software download” in the address bar is massively less effort than navigating their shitshow of a site. It’s not a sign of inexperience in any way.

Allowing an ad with any third party download is an insane policy, and it is not a legitimate practice at all to use an unreliable third party with a well deserved bad reputation to download software in place of the manufacturer.