YOU SAID:
i went to the store yesterday and someone got mad
INTO JAPANESE
昨日店に行ったら誰かが怒ってた
BACK INTO ENGLISH
When I went to the store yesterday, someone was angry.
INTO JAPANESE
昨日お店に行ったら誰かが怒っていました。
BACK INTO ENGLISH
When I went to the store yesterday, someone was angry.
That didn't even make that much sense in English.