Well, technically Android IS a type of Linux.
But your solution is to not use the smart functions of a Smart TV. Do a factory reset of your TV and get some sort of external device like an Amazon Fire Stick or Apple TV or Raspbery pi or even a Linux Laptop. Treat your TV like a monitor for a small computer. Relying on the TV is the worst possible scenario.
Yessss.
Give in to your fear.