How to delete an Instagram account step by step
Open Instagram from a mobile browser or computer.
Now, login to your account.
Then, go to the delete your account page.
Choose an option from the dropdown menu next to why are you deleting your account?.
Then, re-enter your password.
Tap permanently delete my account.
Note- Please note that you cannot delete your account from within the Instagram application.
Note-The option to permanently delete your account will only appear after you have selected a reason from the menu.