Use this Safari option to make it open link in new tab when holding the command buton.
Sometimes, when you read an article and encounter a link that lead to a related story, you want to open that link without losing progress on your current page.
În this cases, the best solution is to open the link a new tab, so that your current page remains active.
To do activate this option, open Safari’s Settings page (command+,) and go the Tabs section.
There, you need to enable “command-click opens a link in a new tab”.
If you want, you can also enable the option below it, to make the new tab active, instead of being open in the background.