A:Answer Thank you for your inquiry! The Alexa Voice Remote supplied with the Insignia™ 50" Class F30 Series LED 4K UHD Smart Fire TV comes with dedicated buttons for specific apps like Netflix, Prime Video, Disney+, and Hulu. Unfortunately, these dedicated buttons are typically hard-coded and cannot be reprogrammed for other apps, such as YouTube TV.
However, you can still use Alexa voice commands to open YouTube TV by saying something like, "Alexa, open YouTube TV." This can be a convenient alternative to using a dedicated button. Keith | Insignia Support https://www.bestbuy.com/site/insignia-50-class-f30-series-led-4k-uhd-smart-fire-tv/6525240.p?skuId=6525240