YOU SAID:

I need to go to a restaurant and eat sushi

INTO JAPANESE

レストランに行って寿司を食べる必要があります

BACK INTO ENGLISH

Must go to a restaurant and eat sushi

INTO JAPANESE

レストランに行って寿司を食べなければならない

BACK INTO ENGLISH

I have to go to a restaurant and eat sushi

INTO JAPANESE

私はレストランに行って寿司を食べなければなりません

BACK INTO ENGLISH

I have to go to a restaurant and eat sushi