YOU SAID:

i went to a party then went back from the party and watched a game

INTO JAPANESE

私はパーティーに行き、パーティーから戻ってゲームを見ました

BACK INTO ENGLISH

I went to the party and came back from the party to watch the game

INTO JAPANESE

私はパーティーに行き、ゲームを見るためにパーティーから戻ってきました

BACK INTO ENGLISH

I went to the party and came back from the party to watch the game