Outdoor lamp with dusk-to-dawn sensor? Does that exist?

If all three switches are together in one place, then connect them together and put a timer switch with astro function in between.

That's probably the easiest way.

So theoretically connect switch "Front" with the two switches "Side left" and "Side right" together and then put the timer switch from our switching program in that spot?
One half switch would then be left over. Doesn't matter.
Then normal up-down lamps with replaceable bulbs on the wall ... Can something like that even be done yourself?

What happens, or what function would a separate switch have that additionally controls one half of the house in another location? On the carport side we have a changeover switch function.
What function would our portable radio switch upstairs have, which was actually purchased so that we can separately control the outdoor lights from upstairs if light is needed downstairs that is currently off?

Phew.... I kind of lost track somewhere in the text.

It’s not particularly complicated if you know what to connect with what and how. But without an electrician behind me, I wouldn’t do it alone either.

But as for the [Wechselschaltung].... I don’t know what will become of it or what can be made out of it. But it probably loses its function. Possibly still usable as a switch-off when the timer actually switches on. The same applies to the [Funkschalter]. But someone needs to look at it on site. Maybe with that and the right technology, the timer switch could be bypassed and the light switched on permanently.

But then I’m really out of my depth.

Ok... I think we can live with the switches if they are no longer needed. Maybe they can be repurposed. I have already looked at Elis with us, a one-man operation with good references should be sufficient. He can also give further tips on our circuits. I am at least now more confident, even though, of course, these unplanned costs reduce the budget again. Thank you very much

We have outdoor lamps from Steinel. The L800 and L810. Could they be something for you? I suspect, however, you mean those up-down spots.

I wanted to as well but the L810 is not available in anthracite. However, it does have the aforementioned twilight function.

So at my place, I would do it myself. But I also know a bit about electrical work. If you have no idea, definitely have it done.
Regarding the switches:
For the terrace spots, I would also choose a large one.
And below that, the timer switch for the three outdoor spots. Done.
As far as I know, you unfortunately have to disable the changeover switch.
The advantage of this solution is that you can control everything from one central location and have complete flexibility when selecting the lights.
For an external dusk sensor, wiring effort would have been required again.