I created dozens of fake instagram accounts to get people banned that I don't like a while ago
Why are you wanting to get them banned?
I want to defend my Instagram and the other users from the trolls and bad guys.
Getting people banned for that reason seems a bit petty. You should contact a moderator instead to deal with them.
I don't have time to do this.
It would be helpful instead of taking on a big task by yourself. You shouldn't try to get people banned just because you don't like them. If they are doing something wrong, you can talk to someone else about it that has the power to ban them.