IMO, the reason the Rams couldn't win the game is because Goff is too inexperienced. The Patriots defense has mastered the art of deception. Goff could never figure out what was going on. Because of his inexperience he went into panic mode too early and too often. The defensive game plan was perfectly planned and executed by the Patriots.
I really wanted the Rams to win, but the Patriots did what they usually do: exploited the most glaring weaknesses of their opponents.