If you have had your account suspended, the best way to get it back is to contact Instagram and explain the situation.
If you have been deactivated from Instagram, it is likely because of the following reasons:-You violated the terms of service-You were reported by other users-Your account was hackedIn order to reactivate your account, you will need to submit a request to Instagram. You can do this by going to the “Help Center” in your Instagram app and then clicking on “Account”. You will then be prompted to log in and provide your username and email.