You need to grow accounts
Automated, or manual.
Then monetize those accounts, whether it be with CPA, Shoutouts, or just selling the accounts.
You can also offer services related to Instagram such as client management and growth services. But it seems that you are a ways from that.
Your question can be answered by looking at all the Journeys involving Instagram. Maybe people share their story step by step on how they make money with IG.
The fact that you posted this thread and expected for someone to spoonfeed you a money making method that will make you dollars by tonight, shows how lazy you are. As this forum is full of nothing but answers.