If your router supports VPN configurations (or you can flash it with custom firmware like DD-WRT), you can install ProtonVPN directly on your router. This will route all traffic from your network, including your smart TV, through the VPN.
To get the best experience for streaming on a TV (high speeds and access to streaming libraries), a Proton VPN Plus (paid) subscription is highly recommended over the free version. protonvpncomtv
Would you like specific setup instructions for Proton VPN on your particular TV device? If your router supports VPN configurations (or you