Electrical planning - How many sockets are enough?

And?
Do you turn off all devices in the evening?

Or do you leave everything on standby because electricity costs are currently really completely overrated?

The latter

6 sockets behind the TV wall, 4 of which can be completely switched off by a switch. 2 have continuous power.

We have planned sockets in some window reveals, for example for Christmas decorations. In addition, we have also installed motion detectors in some places.

At the bed, I would make the bedside lamps switchable from the door and the bed (for comfort). In the kitchen, 3-4 kitchen appliances that are left out in the open should also be switchable with one click (for safety).

It's like with the sockets behind the TV. There are "never" enough if you have many devices, and 8-socket cascades like in the 90s are firstly quite out of fashion and secondly not very nice to look at if the furniture is moved elsewhere later. Therefore, most people rather work with multiple socket strips.

It's about LAN sockets... 4 pieces practically cost nothing extra compared to 2... they also don't need power or space for a switch afterwards...

So I would largely want to avoid switches in new buildings...

Is that a utility room upstairs next to the bedroom? Think about an iron that might possibly be ready for use there, in the bathroom you might have, at most, an electric toothbrush, electric oral irrigator, razor, hairdryer, radio, electric heater, magnifying mirror with lighting, .... maybe more, but also less? At least give it some thought.
Regarding the utility room downstairs again: we could definitely use twice as much space there; I mentioned the battery chargers. In addition, there’s a bread maker or some other kitchen appliance that works for hours without wanting to be disturbed.
Freezer, wine cooler... even if not now, in 10 years you’ll want some appliance that doesn’t have a name yet ;(

Regards, Yvonne