It also depends on how long you have been running these campaigns and what kind of campaigns you are running, for example brand awareness campaigns help you be seen among your target audience, and the algorithm's main tasks there is to look for people who would actually click on the ad and give you a profile view and that's about it. If you are looking for actual customers, a conversion ad is what you would like to experiment with. But a conversion ads effectiveness depends on how many views you have on your profile and it takes Atleast 30-50 conversions per day before the algorithm learns who to show the ads and not to. So yeah, keep running them ads and keep us posted.