Why does macbeth claim he killed king duncans guard

he killed the guards after he had killed duncan
lady macbeth was sure at the time that "a little water clears us of this deed" but after killing duncan macbeth went into a state of shock and had brought the bloody daggers back with him. After refusing to go back there, lady macbeth went and smeared duncans blood on the guards hands and put t he bloddy dagges with them.

therefore in the morning, it appeared that the guards had comitted the murder.
Macbeth killed the guards, because it meant that they could not testify that they had not done it, and it was alot easier for people to blame the murder on the dead men, than if macbeth had not killed them and then in turn they may have suspected him.

I found this online but i hope this helps

Tell the story from the point of view of george

What is the story? i will you i just need the story