YOU SAID:
I went to a party yesterday and it was a thing
INTO JAPANESE
私は昨日パーティーに行ったが、それは事だった
BACK INTO ENGLISH
I went to the party yesterday and it was a thing
INTO JAPANESE
昨日パーティーに行きました
BACK INTO ENGLISH
I went to the party yesterday
INTO JAPANESE
昨日パーティーに行きました
BACK INTO ENGLISH
I went to the party yesterday
That didn't even make that much sense in English.