Sharepoint 2016 Open Sharepoint folder in Windows 10 explorer

Hello,

I am trying to connect to a Sharepoint document library from the Windows 10 file explorer, but I cannot get the correct url. This is the tutorial I am following, but at step 2, I don't have the option to select "View in File Explorer". Mine looks like this:



I have also tried to copy the URL directly and pasting that in the folder explorer path editor, but it returns an error saying "Windows can't find [URL] Check the spelling and try again"

If I try the same URL without the https:// in the beginning, then it leaves windows file explorer opens the document library in my browser.

My goal is to map a network drive to the Sharepoint document library. This (outdated) tutorial explains the rough steps of connecting. When I press finish, I get this error:

So I need to get the correct URL. 

Any help?

Thanks