Urgent:- Im flying on the 1st of May to macau and i have no idea where i can get a cheap hotel/guest house?

Not sure if you will be in an area that has a YMCA or YWCA. Sometimes they offer bedding by the night. Also, Salvation Army has shelters as well. I am pretty sure there would be free. The only deal with them is that you must be pretty much destitute. They usually run a police check to make sure your record is clear and that you are not wanted for any reason.