YOU SAID:

if i cant you cant too

INTO JAPANESE

私もあなたができない場合

BACK INTO ENGLISH

if i can't even you

INTO JAPANESE

私もあなたもできない場合

BACK INTO ENGLISH

If neither I can or you can't

INTO JAPANESE

私ができないし、できないなら

BACK INTO ENGLISH

If I can't and can't

INTO JAPANESE

私ができないし、できない場合

BACK INTO ENGLISH

If I can't and can't