YOU SAID:

Seems like there is no other option but to go left

INTO JAPANESE

左に行く以外に選択肢がないようです

BACK INTO ENGLISH

You don't seem to have a choice but to go left.

INTO JAPANESE

どうやら左に行くしかないようだ。

BACK INTO ENGLISH

Apparently, we had to go left.

INTO JAPANESE

どうやら左に行かなければならなかったようだ。

BACK INTO ENGLISH

Apparently, we had to go left.