(바보처럼, 나쁜 남자처럼 : When 처럼 comes after a noun, you shouldn't put one space between the two)

from experience you can use it when you want to make a comparision it can be used just like the english word: like 바보 처럼. like a fool 나쁜 남자가 처럼. like a bad guy hope that helps