New User.. Trying to Clone a Site from URL

I am trying to use this for the first time… I am using “open url” and then I am trying to save it local but keep gettinng the following errorr… which browers has this option on the mac

Hi there, All of them!
File, Save As
BUT!

Im not sure how its done nowadays with Safari , as it used to save it as some Format That Couldnt be viewed outside Safari itself, so I binned that browser.

Personally I use Brave Browser
but
Firefox
Chrome
ETC …