how to connect ipad to tv

you can use an ligthing to hdmi adaptor or

airplay mirror to an appletv box or tv that support airplay 2

but if the app on your ipad chose to block the feature they can netflex does

Netflix confirms it killed AirPlay support, won’t let you beam shows to Apple TVs anymore - The Verge

Follow the steps in the support document you posted from. If you have an issue with those steps then explain what that is and someone may be able to help.