YOU SAID:

im not that good to understand everything in japanese yet , I'm really sorry

INTO JAPANESE

まだ日本語で全てを理解するほど上手ではありません、本当にごめんなさい

BACK INTO ENGLISH

I'm not good enough at Japanese yet to understand everything, I'm really sorry.

INTO JAPANESE

まだ日本語が上手ではないので、すべてを理解できません。本当にごめんなさい。

BACK INTO ENGLISH

I'm not very good at Japanese yet, so I can't understand everything. I'm really sorry.

INTO JAPANESE

私はまだ日本語があまり上手ではないので、すべてを理解することはできません。本当に申し訳ありません。

BACK INTO ENGLISH

I'm not very good at Japanese yet, so I can't understand everything. I'm really sorry.