YOU SAID:
i need to use the restroom to go pee
INTO JAPANESE
おしっこをするためにトイレに行きたいです
BACK INTO ENGLISH
i want to go to the bathroom to pee
INTO JAPANESE
トイレにおしっこをしに行きたいです
BACK INTO ENGLISH
i want to go to the bathroom to pee
Come on, you can do better than that.