YOU SAID:

I am not sure if you are interested

INTO JAPANESE

興味を持っている場合、私はわからない

BACK INTO ENGLISH

I do not know if you have interest in,

INTO JAPANESE

興味があれば、私はわからない

BACK INTO ENGLISH

If you are interested, I don't know.

INTO JAPANESE

興味があるなら、私は知らない。

BACK INTO ENGLISH

I don't know if you're interested.

INTO JAPANESE

興味があるなら私は知らない。

BACK INTO ENGLISH

I don't know if you're interested.