YOU SAID:

i need to eat a lot of meat because if i do not eat meat i will be sick

INTO JAPANESE

肉を食べないと病気になるので、肉をたくさん食べなければならない

BACK INTO ENGLISH

If you don't eat meat, you will get sick, so you have to eat a lot of meat.

INTO JAPANESE

肉を食べないと病気になるので、肉をたくさん食べなければなりません。

BACK INTO ENGLISH

If you don't eat meat, you will get sick, so you have to eat a lot of meat.