Mistake 6: Narrowing the audience

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In an effort to target specific users more accurately, advertisers specify many audience interests. But this may worsen rather than improve the results.

For optimization algorithms to work effectively, a campaign should have as much data as possible about the audience, clicks, conversions. By segmenting the audience, we reduce the amount of data. Because of this, the algorithm works worse.

By the way, you shouldn't immediately physician database launch advertising with detailed targeting. It's better to start with remarketing. There are three options for setting it up.

If the Facebook pixel is installed on the site. Then we can create an audience based on its data and “catch up” with advertising to all site visitors - not only those who came to it from Facebook, but also those who came from Google, Yandex, etc.
If there is no website, but there is a popular Instagram page. Then we can set up remarketing for our subscribers.
If you have a database of customer contacts (phones and emails). These contacts can be uploaded to Facebook Ads, creating a custom audience for displaying ads. Important: there must be at least 1000 contacts (this is the minimum audience for launching ads through Facebook Ads).