This article explains the steps to connect your Nintendo Switch or Nintendo Switch (OLED model) to your television. Please note: The Nintendo Switch Lite does not support TV mode.
How to connect Nintendo Switch to TV
Gather these items to connect your Nintendo Switch to your TV. Everything except the TV should have been included in the box when you bought your Switch.
Once you have all of the materials above, it only takes a minute to connect your Switch to your TV.
Place your Nintendo Switch dock on a stable surface close to the television. Open the back of the dock.