Luther’s sermons would have been meaningless to you. Here’s an example of Luther’s preaching:
Luther’s sermons were mixtures of Latin, German, and sometimes Greek and Hebrew. They weren’t intended for the masses, they were intended for University students and extremely well educated layfolk.
The myth that Luther was a man of the people is simply a fantasy. Luther was an academic who spoke like one to his peers. What the common people knew of Luther’s sermons would have been second hand rumor and gossip. It’s little wonder, then, that Luther’s preaching had little effect on the daily lives of the people of Wittenberg.