是i don't have friend还是i don't have friends?

是i don't have friend还是i don't have friends?
是i don't have friend还是i don't have friends?

是i don't have friend还是i don't have friends?
i don't have friends

那要看你前面是单数还是复数，如果是你一个短语，就都可以

i don't have friends，一般情况这种情况用复数，若要用单数，名词前面必须要冠