YOU SAID:

I had had gone to church

INTO JAPANESE

私は教会に行っていた

BACK INTO ENGLISH

I was going to church

INTO JAPANESE

私は教会に行きました

BACK INTO ENGLISH

I went to church

INTO JAPANESE

僕は教会に行った

BACK INTO ENGLISH

I went to the church.

INTO JAPANESE

僕は教会に行った

BACK INTO ENGLISH

I went to the church.