YOU SAID:

if it can't get better it must get worse

INTO JAPANESE

それが良くなれないなら、それは悪化しなければならない

BACK INTO ENGLISH

If it doesn't get better, it has to get worse

INTO JAPANESE

それが良くならないなら、それは悪化しなければなりません

BACK INTO ENGLISH

If it doesn't get better, it has to get worse