Just like smartphones, each smart TV has its own operating system. One major brand in this market recently announced it's transitioning away from Android's.
Moving from Windows to Linux doesn't require much of a learning curve and brings some real benefits, but you need to accept a few compromises.
In the Alexa app, visit the hamburger-line More/Menu icon at the bottom to open the larger menu. The head to Settings > Hunches > the Hunches Settings gear icon in the upper right > Notifications.
All three sizes of the Amazon Fire TV 4-Series 4K Ultra HD smart TV are heavily discounted for a limited time.