Betting is almost always a losing proposition for the overwhelming majority of bettors, but if one seriously cannot grasp why this is a bad idea, the best advice you can ever get is this:
stop betting immediately
the spurs lost to blazers who were +11.5, but that rarely happens
the spurs lost to blazers who were +11.5, but that rarely happens
the spurs lost to blazers who were +11.5, but that rarely happens
the spurs lost to blazers who were +11.5, but that rarely happens
the spurs lost to blazers who were +11.5, but that rarely happens
the spurs lost to blazers who were +11.5, but that rarely happens