Final answer:
Macbeth became more insecure and worried after his visits with the witches due to the prophecies and the actions he felt he needed to take to fulfill them.
Step-by-step explanation:
Macbeth became more and more insecure and worried as a result of his visits with the witches. The witches' prophecies, particularly their prediction that he would become king, planted seeds of ambition and insecurity in Macbeth's mind. The more he thought about the prophecies, the more he grew anxious about the actions he would need to take in order to make them come true. This insecurity and worry led Macbeth down a path of guilt, paranoia, and ultimately, his downfall.