I have yet to have dinner bu doğru görünüyor mu?

I used "yet" in my example too, just at the end.

English was my favorite subject and I don't recall all the little rules that people mention on HiNative like "using yet in a negative sentence". It must be being taught differently around the world than it is here. Maybe because it has to be compared to the language you know in order to make sense to you? I think these little rules are making it more confusing. Most English natives know that there are exceptions to every rule - because our language is derived from many other languages. Nothing is an absolute.