The learning stage should be called discovery, and it’s largely unstable. This is the period of time wherein Facebook is sifting through audiences to find the similar characteristics of people that can create a buyer avatar.
To get out, and stay out, of the learning phase you need 50 conversions per ad set every 7 days on a perpetual rolling cycle.
On a budget of $30 per day I’m assuming it’s going to be very hard to hit the 50 conversion per day threshold to get out of learning, so you’ll likely be in a perpetual state of learning, bouncing from audience bucket to bucket.
Outside of remarketing audiences Facebook is largely an awareness building platform, much like the end caps and checkout racks at the grocery store. Because intent is low you are believing in “Facebook’s magic” to find and deliver audiences that will convert. I say all this to caution that there us always going to be a degree of instability in your campaigns.
Additionally, none of platforms share conversion data with each other, so if you were to send an email out and get 4 conversions, but those same users saw or clicked an ad within 28 days (standard Facebook attribution window – now 7 days), both platforms would record conversions even though the last click came from an email.
Lastly, break out your conversion reporting by click and view.all display platforms track conversions based on views, wherein at least 50% of an ad was viewable. Note that viewable infers that the ad could be seen on screen, not that it was viewed on screen. With the rollout of ios14 view conversions are going to be severely impacted, so make sure you are optimizing for click conversions, and that you that you have server side tracking and/or conversion API set up.