YOU SAID:

It better to fall sometime.

INTO JAPANESE

いつか落ちるほうがいいです。

BACK INTO ENGLISH

You had better fall someday.

INTO JAPANESE

いつか落ちたほうがいい。

BACK INTO ENGLISH

You should fall someday.

INTO JAPANESE

あなたはいつか落ちるはずです。

BACK INTO ENGLISH

You should fall someday.