I wish to connect blue tooth transmitter to my LG TV 22ld340, but could not find audio output. Is it possible to connect trans

That TV doesn't seem to have any audio outputs so there is no simple way to connect a bluetooth transmitter to it.
If you took the set apart you could wire a speaker to line level converter to the wires that are now connected to the internal TV speakers. That would give you an audio output for a transmitter or any soundbar or powered speakers.