YOU SAID:
I’m happy but also sad
INTO JAPANESE
嬉しいけど悲しくもある
BACK INTO ENGLISH
happy but also sad
INTO JAPANESE
嬉しいけど悲しい
BACK INTO ENGLISH
happy but sad
INTO JAPANESE
嬉しいけど悲しい
BACK INTO ENGLISH
happy but sad
That didn't even make that much sense in English.