I have no experience using Apple systems or products, that said there is a fork of uBlock, the content-filtering blocker I use, available for Safari 11 ( untested on older versions (but should work?)). https://safari-extensions.apple.com/details/?id=com.el1t.uBlock-3NU33NW2M3

In the NOTES  it says "To benefit from uBlock Origin's higher efficiency, it's advised that you don't use other inefficient blockers at the same time (such as AdBlock or Adblock Plus). uBlock₀ will do as well or better than most popular ad blockers. Other blockers can also prevent uBlock₀'s privacy or anti-blocker features from working properly." mentioned here in case you already have an AdBlocker installed.

Seeing as you have the URL (eu.thluckygiftsacombank.icu) aren't you able to specifically block that address in your browser preferences?

And you're probably best advised, as with windows users, to ensure there is no Malware of any kind on your system before installing any AdBlocker (see the pinned thread at the top of this forums index list)

There is a Malwarebytes programme for Mac systems https://www.malwarebytes.com/mac/

Again know that I have absolutely zero experience with Apple systems and products and have merely searched the Internet to see if the products I use to have a pop-up free experience are available for Apple systems and shared the details here.

I use a Linux system called ubuntu MATE with Firefox web browser with uBlock Origin add-on. I also use another add-on that deletes cookies when I close tabs. (cookie AutoDelete).

I very rarely see any adverts of any kind anywhere on the Internet and have never had any issues with pop-ups on eBay.