You need a program that works with Instagram.

The program specifies different accounts and their passwords, indicates a text file with comment options, indicates a direct link to a photo or video in Instagrame, clicks the start button and the program takes a random comment from our text file logs in with a random login that we also specified and leaves this comment to a photo or video that we gave a link, then the program takes another comment or another login and again leaves a comment, etc. In the cycle