Hi @jaykay71 ,
According to the [https://www.samsung.com/au/support/model/UA40ES6200MXRD/|user manual] for your TV, it has Bluetooth but it is a “proprietary” Bluetooth in that it will allow you to connect a BT mouse and BT keyboard but nothing else via BT to the TV.
If your TV has a headphone socket (it says it depends on model) an option to consider is connecting a BT dongle to the headphone socket and then pair your BT headphones to it .
Search online for ''BT dongle'' (or Bluetooth transmitter) to find suitable devices.