If your main objective is to drive sales on your landing page, Link Click Ads (optimized for conversions) are the better choice over Lead Ads.
Lead Ads are designed to keep users on Facebook or Instagram, using instant forms to collect contact info—great for generating leads, but not ideal when the sale happens on your website.
On the other hand, conversion-focused Link Click Ads send users directly to your landing page, where you can track actions like Add to Cart, Initiate Checkout, or Purchase. This allows Meta’s algorithm to optimize based on actual buyer behavior, not just clicks or form submissions.
If your pixel is still warming up, you can start by optimizing for View Content or Initiate Checkout to give Meta the signals it needs. But overall, for generating actual sales through your site, Link Click Ads with a Sales or Conversion objective will deliver far more meaningful results than Lead Ads.