YOU SAID:

I'm not as young as I used to be.

INTO JAPANESE

私は昔ほど若くないです。

BACK INTO ENGLISH

It's not as young as I.

INTO JAPANESE

それは私が若くないです。

BACK INTO ENGLISH

But I was young.

INTO JAPANESE

しかし、私は若い頃。

BACK INTO ENGLISH

However, when I was younger.

INTO JAPANESE

しかし、私は若い頃。

BACK INTO ENGLISH

However, when I was younger.