PS4 plays sound Soundbar and TV?

I bought a soundbar and the Samsung HW-M360, but I can't connect it to my TV because it does not have an optical out slot, so I connected this cable to the PS4.

The problem which occurs now, however, is that the sound comes from both devices and does not sound too nice…

An HDMI slot does not have the soundbar, which I can't connect to the TV.

How do I get the sound only on the soundbar?

Hdmi outputs sound and picture, so the tv also outputs sound, how about just putting the sound of tv at 0? But it is logical if you have two different ports s.der ps4 and then something connects to both then comes out of both. Either box with adapter s.tv or th on silent set…