YOU SAID:

I promise you I’ll be better I promise you I’ll try

INTO JAPANESE

私はあなたがより良いだろうと約束します

BACK INTO ENGLISH

I promise you will be better

INTO JAPANESE

あなたが良くなることを約束します

BACK INTO ENGLISH

Promise you will get better

INTO JAPANESE

あなたが良くなると約束する

BACK INTO ENGLISH

Promise you will get better