Smart home control, provider / experiences?

How beginner-friendly do you rate Loxone? I'm not sure if I can manage it. But I don't really trust the RWE system, I think it's actually quite rubbish...

RWE is there to satisfy the urge to play a bit and show off to the neighbors... but how long the system will survive is questionable... but it's mostly much ado about nothing... because a huge corporation has simply jumped on the bandwagon and wants a piece of the pie...

Loxone, as mentioned, is already a good solution for the average consumer... but here too it is questionable how long it will remain on the market... but I think there is nothing to fear with Loxone for the next 10 years...

:
On the Loxone website, a lot is explained under 'Services'. As a beginner, I wouldn't trust myself to do the programming; that should be done by the electrician or a Loxone partner who plans it together with the electrician. You should acquire a basic understanding for this; otherwise, they will plan according to your needs.
There is an app for the phone or tablet with which you can control all the rooms; a beginner can manage that. You can simply download it and connect to a test server to get a feel for whether you can handle the interface.

Otherwise, one should not "argue" about the number of buttons, that is certainly very individual. Everyone is different, there is surely no one-size-fits-all solution. For example, my little daughter is currently a bit afraid when we play in the living room and it is dark in the hallway. Otherwise, personally, I walk around in completely dark hallways when everyone else is asleep, it doesn't bother me at all. Therefore, at the moment a normal switch makes sense. Without children, a presence sensor would certainly be useful, but only if it can distinguish between cat and human (they don't need extra light at night).

That usually contradicts "a proper" installation. But yes, you can do it step by step if necessary... however, you have to lay all the cables beforehand and think about all the places from where you want to switch something and what should be switched... well, and the sensors as well...

My idea so far was: To lay a bus cable in a star shape to each socket and associated light, plus always a bus cable to the locations where extras should be placed later.

Many things just don't work afterwards... like lights/roller shutters etc. first conventional and later via the bus system... that doesn't work because of the completely different topology.

Here you say it doesn't work. Why don't roller shutters and lights work first conventionally and later via bus? The decisive thing is that the bus is available on site, isn't it?

Run a bus cable star-shaped to each socket and corresponding light, and always a bus cable to the places where extras should be installed later.

You don't need a bus cable to the sockets. Only to the switches and individual sensors.