You should follow these steps to delete your account:
1. Visit the “Instagram.com” from any web browser on any device
2. Then, log in if prompted to do so
3. Pick or choose on the “Profile icon” in the upper right side corner
4. Pick on choosing “Profile,” then choose “Edit Profile.”
5. Drop down and choose “Temporarily disable my account” on the right side of the “Submit” option
6. You get asked why you are doing this, choose an option from the scroll-down menu
7. Then Re-type your account password
8. Pick or choose “Temporarily disable the account.”
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https://www.guidebrain.com/deactivate-o ... m-account/