YOU SAID:
hi I don't know whats happening here
INTO JAPANESE
こんにちは私はここで何が起こっているのか知りません
BACK INTO ENGLISH
Hello I do not know here what's going on
INTO JAPANESE
こんにちは私はここで何が起こっているのかわからない
BACK INTO ENGLISH
Hello I do not know here what's going on
That didn't even make that much sense in English.