If you’re looking to change your Facebook event from public to private in 2020, there are a few things you can do. First, make sure that your event is set up as a public event. This will allow people to join and view your event, but it won’t let them make any changes or add their own content. Next, make sure that your event is set up as a private event. This will only be available to those who have logged in and are approved by the organizer. This will also prevent other people from joining or viewing your event. Finally, make sure that you have set up a password for your private event. This will protect your information and ensure that only those who are approved by the organizer can join and view your event.