The Miami Heat took on Luka Doncic and the Dallas Mavericks on Monday. Miami was shorthanded missing three key bench players. It was a terrible shooting second half for Miami. Dallas took advantage and overcame the Heat’s double-digit lead in the third period. The Heat couldn’t get going from downtown and the ball movement was not there. Dallas played terrific defense on the Heat in the second half. With the loss, Miami falls to 37-21 for the season. Here are four takeaways from Tuesday’s loss to Dallas. Be sure to check out all of our NBA content. Tale of Two HalvesThis was basically a tale o…