Here is what I do, but ofc not for live sports.
My TV does have access to my wifi but I blocked its MAC address from actually accessing the internet. I have a jellyfin server on my network that also can not access the internet. Now my tv can see the jellyfin server without any data leakage, cause they are on the same network :) maybe this helps some of you.
If it helps, the actor specifically asked to be brutally killed iirc.