The games you can’t play without Joy-Con Controllers
List of games that don’t support Handheld Mode :
Just Dance (series)
Super Mario Party
Ring Fit Adventure
Nintendo Labo (series)
We’ll update this as-and-when new titles are released which don’t support Handheld mode. In fact you can still achieve it by external joy-con bluetooth connection to your Nintendo Switch Lite in order to work as tabletop mode but still there is no TV mode available.