Google does not let me add a popular restaurant to the map.
This is a real-life restaurant in the local park of the city of Stavropol. Google constantly cancels my edits (does not accept them). I have a perfect contribution history, I have never created fake locations.
This situation discourages me and deprives me of inspiration for improving Google maps
The message that you are receiving seems to be clear: “Google isn’t accepting edits to this Location”. It means that is not because of you, it is because of the location. The area had several spam attack, so it is very possible that Google locked the area for the Users Generated Contents.
In addition please note that adding unnecessary photos when adding a place is totally useless.
What I normally do is to add a single, clearly understandable, photo of the storefront, with the name of the business clearly visible.
You should remove from your contributions the photos related to “unknown places”, that are not giving points to you, but are present as "duplicated photos