YOU SAID:

I was going to went there but no

INTO JAPANESE

そこへ行くつもりだったが、いや。

BACK INTO ENGLISH

I was going to go there, but no.

INTO JAPANESE

そこに行くつもりだったが、違った。

BACK INTO ENGLISH

I was going to go there, but it wasn't.

INTO JAPANESE

私はそこに行くつもりだったのですが、そうではありませんでした。

BACK INTO ENGLISH

I was going to go there, but it wasn't.