@baudav
Sorry for using the word “private” instead of “restricted” (Manage your Maps profile ). Restricting a profile is perfectly fine, to protect your own privacy, however, as I said already, it makes difficult to give you a detailed answer, because several time the reason for one of more photos to be hidden or private depends of several factors, that may be also not directly related to a single photo.
Several of my photos are not visible in the listing too, especially if showing the logo of the business or arts. The photos are not private, but are not in the listing.
When you share with us a photo that has been made “private” by Google, we will not be able to see it. However, to understand if a photo is made private or simply not displayed you need to compare the public profile with what you see in your side.
Here below an example of what you can see on my side, and the difference between what I see (my private profile - on Left), the public profile (center) and the photos that received points.
Only comparing the profiles you will be really able to understand if a photo has been flagged as private, or if it is only “not displayed” in the business.

Another way to understand if a photo has been made private is that, on desktop, clicking on the thumbnail of a private photo, the photo will not be displayed in big size.
A photo is chosen to be displayed by an algorithm, based on several factors, so there is no way for someone to report a photo for have the photo replaced with another one. If that photo is Spam, you can report it. If the Local Guide is repeating his behavior, the whole profile can be reported: For more details about the procedure, please click
HERE
Regarding your question about your photo in Mairie de Yutz , I have to say that your 360 is great, but the photo shared with us, IMHO, is a kind of photo that is violating the rules, already shared with you: "Dark, blurry, and redundant photos will be removed."
I would like to ask you, when you respond, to tag the person you are talking with by using @ to generate a tag. The tag will generate a notification, and it will makes easier to follow the conversation