block a malicious website on mac

I'd like to block a malicious website that is popping up in my safari notification with a virus alert prompting me to click a link. When I follow the directions I find online I simply cannot get past Step 2. I do not see the Click customize to block specific websites. ... option?

I am on Mac Air OS Sonoma 14.6.1

How to block certain Websites on Safari Mac?

How to block websites on Safari

1. Click Screen Time. ... 
2. Go into the Content and Privacy section of Screen Time. ... 
3. Click customize to block specific websites. ... 
4. Click the plus sign under the restricted section to block specific sites. ... 
5. Add the URL of the site you want to block and click ok.