Carousel posts
An Instagram carousel is a post with up to 10 photos or videos. These will be shown on your feed multiple times as long as they receive engagement. To drive that initial engagement and get people to stop on your post, make the first image your strongest visual.
Choose something that you know will appeal to your existing audience from looking at the performance of your past posts. Then use the second image to surprise them with a new visual.
When the post is shown again, it will repeatedly show a different lead image in the carousel, as long as there is engagement on the post.