To set up Remarketing Lists for Search Ads (RLSA), you first need to enable remarketing in your Google Ads account.
Go to Tools & Settings, then Audience Manager, and create a new remarketing list. To track your website visitors, add the Google Ads remarketing tag to your site. You can do this by placing the global site tag on all your web pages or using Google Tag Manager for easier setup.
Next, define who you want to target - like people who visited specific pages or your entire site—and set how long they stay on the list (e.g., 30 days). Once your list is ready, apply it to your search campaigns by editing the audience settings in your campaign or ad group. You can target only those on your list or simply bid more for them.
Finally, customize your ads to appeal to these returning visitors—perhaps by showing personalized offers or reminding them about their interests, and monitor the campaign to improve performance over time.