When I try your query I only get a bunch of local German stuff (including a map with restaurants).
I admit, I don't even know what Kiel is so I can't validate the results but despite them being in Germany (and my search having had the country selector set to UK), it looks pretty good.
If I search something more generic like "all you can eat sushi" I get a neat map with a few restaurants that do that, plus a bunch of TripAdvisor and other directory and blog posts exactly about that, all local.
If I try your query again, setting the country to Germany, I get https://yummy-kiel.de/ as the first result, a map with top-three restaurants as the second, and again, a bunch of directories and blogs with all you can eat Kiel.
With all respect, there’s not a lot of restaurants around here ) comparing to i.e. Hamburg. A couple of steak houses, some locals, 4-5 asian food and the Brunswik, which is always busy. There’s also Kiellinie, but it’s mostly a seasonal thing. Though there’s a lot of folks around sipping cocktails with ice in winter, crazy. Love this city.
Maybe its different in the US or just not optimised in Germany, but the quality of search results isn't comparable.
Query: "All you can eat Kiel"
Google:
1. a map with the top three restaurants for this context in the foreground
2: a list of restaurants, sortable by price/date/hours
3 to end of page: links to homepages of the top restaurants
DDG:
1. a completely random assortment of irrelevant links on the left
2. a semantic web box with a 3/5 rated irrelevant restaurant on the right
3. wild youtube-videos vaguely related to the query between text results
4. images
5. more wild links
that kind of thing. And Kiel isn't a small city, we even had DDG print ads here.