It sounds like you're trying to connect your Bluetooth headphones to the LG 32LJ610V TV, but it's not working. To make it work, try these steps:
Plug the Ugreen CM523 Bluetooth adapter into the TV’s USB port.
Make sure your Bluetooth headphones are in pairing mode.
On the TV, go to the Sound settings, then select Bluetooth Audio or Sound Output and choose your headphones from the list.
If this doesn't work, check if the TV supports Bluetooth audio output or if the adapter needs additional settings.