You can run facebook ads to landing pages and then track the events to maximize your conversion rates.
1. To get started open a landing page that you have already created.
Click Landing Pages --> Edit Landing Page in the side menu and select a page.
2. Click on the Pixels tab at the top.
3. Toggle the Add your Facebook Pixel to this page to Yes
4. Add your facebook pixel id to the textbox that appears.
5. If this is a thank you page from an optin then you can set the Track this page as a lead to yes. (Or if it is a thank you page they reach after they make a purchase you can do the same to track it as a purchase.)
6. Save the page.
Your pixel should now properly track the Facebook ads.
It is recommended to do a test as well to ensure everything is tracking as you would like.
You can do this by turnig on the Enable Test Mode option in the top of the tab.
It will then ask you for a test id. You can get that from Facebook directly. See the photo below
Once you have the code paste it and save the page.
Then you can proceed to run a test on the landing page and it shold track it here inside of Facebook so you can make sure everything is tracking as you would like.
While testing in test mode you should see your data appear (like the image below) so you can confirm it's tracking as expected.
Note: Test Mode will shut off automatically after 30 minutes or you can directly turn it off.