AdRules allows you to build lookalike audiences based on campaigns or ad sets directly from Advanced Reporting using a tool called Audience Builder Express. To learn more about this feature, check out this article.
To build a lookalike audience from a campaign or ad set. Click on the build button at the top right corner after selecting the campaign, ad set, or combination of campaign and ad sets.
Click on Audience, and then either Create Lookalike Audience from Ad Sets or Campaigns.
If there is an error publishing a lookalike audience, you will receive an alert like this one.