how does macbeth change in the first two acts of the play?

1.) at the start of the play, he was satisfied with his position and not ambitious, but lady macbeth stirs his ambition.

2.) he was never loyal to duncan, but after duncan’s death macbeth recognizes his good qualities.

3.) although he is brave in battle, he cannot bring himself to kill anyone except on a battlefield.

4.) at the start of the play, he is loyal to duncan, but he later kills duncan to get what he wants.