Lotto is not haram it is not mentioned in Quran they did not have lotto in those days . There is only one kind of gambling specifically haram in Quran. In this case I go with the literal meanings.
Lotto essentially fulfils all the requirements needed for a Juwaa...
You are betting on some numbers and getting money without deserving it out of sheer luck - the money taken from other players... Exactly how a juwaa works.