After you advertise on Facebook/Instagram using meta ads, you may encounter a situation where you may get less number of clicks(low CTR) but higher conversion rate(these metrics are available from Google analytics if you use UTM parameter correctly). This means that, your landing page is working very well but your ad creative is not(it can be targeted audience also sometimes). So make 5 to 10 different types of creative and test them. Which ever creative gives you higher CTR, make it a winner and follow the same style when ever you change your creative after your ad catches ad fatigue(higher frequency normally more than 4 for sales ads).....