There are a few ways to get a username that is already taken on Instagram. One way is to create an account and then use the “@” symbol to indicate that you are the original creator of the username. Another way is to use a name that has already been taken and then change the first letter of the username to “j.” For example, if you want to become “jessica_jones,” you would create an account and then use the “@” symbol to indicate that you are the original creator of this username.