You can create a collage to merge all your photos in only one post. Once you have created your photo collage, you can upload it on your social media accounts. Sometimes, you are not able to get many likes by uploading a single photo; then this method is really good to get likes on your photo collage. You can use PicCollage application to make a collage on your iPad by following the steps given in this article.
Source: https://customer-support-en.com/how-to-make-a-collage-on-ipad-with-piccollage/