If radiator doesn't hold water and it also comes out back of motor to right on 1991 Mercury Grand Marquis

Need to find out if motor is blown or cracked block or maybe just blown head gasket

Anything been done to it that would have required the antifreeze to be drained and refilled? Thinking maybe not enough 'antifreeze' in the mix and could have frozen in this cold weather but should have done it before now. In any event it needs to be looked at to determine where it is actually leaking from.