I don’t know wheather this is an option for you, but there is also a way to use YouTube without using it. There is a project called Invidious. Like in the lemmy universe, there are multiple instances. One of them is yewtu.be
You can use it as a website, but it’s also a progressive webapp. That means, you can go to the website and install it as an app via the browser options. This works on most devices, but I don’t you whether your TV is one of them…