Here in Germany in most houses and apartments, rooms come with wiring for one, rarely two ceiling lamps. That’s it. If you’re fancy, there’s maybe wiring for one or two wall mounted lamps, if it’s a particularly big room. In the average room, if your lighting is properly installed you have one sufficiently bright ceiling lamp (one lamp, not necessarily just one bulb) to illuminate the room to a good brightness level. It’s not cozy but it’s bright.

Now tell me, what should I do, to make it more cozy, that doesn’t involve laying new wiring into a concrete wall?

Also, when has code compliant lighting ever been designed to be cozy? The regulations for primary lighting here in Germany are designed to provide sufficiently bright and pleasant light, illuminating the whole room. That’s it. There aren’t even any real codes for home lighting, only for work spaces, which do not need to be cozy but safe and comfortable.

For home lighting there only exist unofficial recommendations, which, btw, usually include a recommendations for floor lamps and indirect lighting in living- and bedrooms.