Is the foundation slab and house protected against moisture with bubble foil? Experiences?

This wish has so far only been fulfilled twice and three times. This would not be possible here at all - hence the inquiry where else you are writing. There were no complaints against you, and will content himself with responding to your lectures by his future abstinence from helping you. Hopefully you won’t also drive away .

Had looked for craftsmen privately and was written to or companies that were there wrote to me, I was in parallel talks. If someone doesn’t want to, they don’t have to answer me.

Those who don’t want to don’t have to reply to me.

But those who reply/did reply to you may also expect not to get lectured for it.

That definitely isn’t enough that way.

Why?

I am of the opinion,

Why? What does the contract say? Dimpled membrane is not a standard service that is included. That is an issue of the exterior landscaping.
That may be your opinion, but your "wish" must be stated in the contract. The waterproofing of the house has been done. Job done (unless the contract states otherwise). You are welcome to have a different opinion, but that (unfortunately) doesn’t count in house construction.
You are welcome to post passages from your contract with the developer (you bought a house including the plot) or your house construction contract with the construction company (you had a house built on your plot). Also on the topic of how the waterproofing is to be done. This should be regulated in the contract or the specifications.

That it is part of house construction.

A garden is also part of house construction. But the company does not do that either ;)

It would be better if instead of paint, bitumen membrane had been used, then it would be waterproof.

Yes and no. It would be better. It’s waterproof now as well. State of the art. The base is not leaking.

Dimpled foil alone is sufficient,

That is sufficient now as well (which one can still debate). You still haven’t answered the topic of drainage and water.

Is that enough now?

Once again: yes.

But waterproofing with bitumen membrane,

No, why? It’s already waterproofed. KMB and waterproofing slurry for the base/soil-contact area is the normal execution. Bitumen membrane is basically the same thing, just in sheet form and not troweled on.

Then it’s waterproof against moisture?

As it is now, it is "waterproof".

1. What water load case do you have?
2. Is drainage necessary and/or existing?
3. For all "normal" buildings the execution a) is exactly right and b) nothing is missing, since this does not belong to house construction (dimpled membrane), but to the exterior landscaping – unless it is commissioned or you have a basement
4. Patio doors are usually waterproofed with sealing membranes made of plastic or bitumen or alternatively with liquid plastic (the former is often done by the roofer)

Regarding the patio door: roughly like this – no matter the material. Only then come the further waterproofing steps.

Hello,

the building waterproofing (black bitumen) is fine. In my opinion, that was not paint, but was applied with a brush, visible from the lumps on the ground.

The facade waterproofing also seems to be fine, visible from the sealing slurry. To make more precise statements, a picture before backfilling is needed. With the sealing slurry, it is important that it extends downward beyond the plastered area.

The window sealing is unclear. Based on the first picture, a sealing membrane under the sealing slurry can be guessed, visible from the wavy texture of the sealing slurry below the window. More pictures are also needed here to make more precise statements.

Thus, based on the few available pieces of information, it can be assumed that all waterproofing was carried out professionally.

The dimpled membrane belongs to the exterior facilities. If not agreed upon in the contract, it is not part of the tasks of the builder or general contractor. The black dimpled membrane is unsuitable for the residential building, but the dimples are facing outward. Therefore, nothing will likely happen if the membrane remains as is. Damage to the facade from the dimples is no longer possible. As long as no vibrating plate is compacted directly next to the house, nothing should happen.

Best regards