As lots of people pointed out, leaving Instagram is also an option. But just a reminder that simply deleting the app is not enough. You should first request the permanent deletion of your account, otherwise your stuff will remain online. Here’s how: help.instagram.com/139886812848...
How to permanently delete Instagram accountsFind out how to delete, disable or deactivate Instagram accounts, including estimated deletion wait times and how to regain access to your deactivated account.help.instagram.com