The series is not over.
The Milwaukee Bucks have Giannis Antetokounmpo (assuming he's a go in Game 5) and home-court advantage. If they take care of business at home, all they have to do is win one road game to redirect things in their favor.
The Miami Heat's utterly shocking Game 4 comeback was essentially Antetokounmpo's first game of the series after leaving Game 1 with a back injury. The Heat are some kind of posteason gremlin, their sneering, fearless brutality bubbling to the surface every April and May. They are never too worried about whom they are playing.