Open Instagram
Go to your profile
Tap the menu icon (three lines)
Select Settings and privacy
Tap Accounts Center
Select Personal details
Tap Account ownership and control
Select Deactivation or deletion
Choose Deactivate account
Select an account (if prompted)
Enter your password
Choose a reason for deactivating (if prompted)
Tap Deactivate
Confirm by tapping Deactivate again (if prompted)