Room divider - one-sided or double-sided?

Must resort to drywall construction because of the loads on the screed.... Thank you also !!!!

So I would keep it "shelf-like" above and below the TV if you want to maintain openness. I imagine a 1.8m high wall that suddenly stops looks strange. Stability could also be negatively affected. If someone stumbles and falls against the wall, will it definitely hold? Especially if it is not supposed to be that thick?

The sofa we like should have a seat height of about 45cm, I will ask again. 17.5 was recommended to me by the mason, for stability = TV mounting etc.

I definitely do not want to contradict the mason; but visually, in my opinion, 17.5cm thickness is already quite a chunk. For this reason, I solved it here with a corner to achieve stability, thus virtually framing the TV area. Then even, for example, MDF boards or the like would be sufficient, or a lighter construction. Depending on the use, you could also take a kind of sideboard or half-height shelf, cover the back and use it as a TV wall. But all this also depends on the type of intended use.

Is the attached example from the opening post already out of the running? That way you would have anchoring at the top and bottom and thus stability. Cables could then be routed up inside the beam/pipe. At the same time, it seems freer and airier to me than a freestanding wall in the middle of the room. It could also be realized by the writer with shelves instead of a completely closed surface.

Is the attached example from the initial post already out of the running? That would give you anchoring at the top and bottom and thus stability. You could then run cables up through the beam/pipe. At the same time, it seems freer and airier to me than a freestanding wall in the middle of the room. It could also be realized by the writer with shelves instead of a completely closed surface.

I also find this variant the best and it makes the room appear open.

I would make a modern room divider out of wooden beams/slats. Shelves or openings can then be integrated here. I would continue the beams along the ceiling.