YOU SAID:

I'm not even 14 and this is deep.

INTO JAPANESE

私も14歳ではありません、これは深いです。

BACK INTO ENGLISH

I am not 14 years old, this is deep.

INTO JAPANESE

私は14歳ではありません、これは深いです。

BACK INTO ENGLISH

I am not 14 years old, this is deep.