If at registration in Instagram you have chosen a nickname that you do not like, you can always change it. This action will not take you much time. you don’t even need a phone! Although, of course, the easiest use the official app.
You can easily change your nickname on Instagram from your computer. For this you will have to go to the official website of the social network and log in to it. Then in the settings of your profile (get there you can by clicking on your username in the upper right pages) click on the link “edit profile” (see screenshot located on the left).
You immediately get to the desired settings page. Here in the graph username you just enter a new one and press green submit button.