YOU SAID:

not really sure what this is meant to do

INTO JAPANESE

これが何をするのか本当にわからない

BACK INTO ENGLISH

I really don't know what this does

INTO JAPANESE

私は本当にこれが何をするのか分からない

BACK INTO ENGLISH

I don't really know what this does

INTO JAPANESE

私はこれが何をするのか本当に知りません

BACK INTO ENGLISH

I don't really know what this does