Let and Let’s — What’s the difference?

Let —to allow or have

permission to do something

Let me go.
Let me see.
Let me do my work.
Let me play video games.
Let me have some of your pizza.
Let me borrow your bike.
Let me help you carry that.

Let’s— when we work together or do something with someone

Let’s go home.
Let’s go for a walk.
Let’s go to the party.
Let’s help that man crossing the street.
Let’s schedule a meeting.
Let’s meet at the cafe later.
Let’s go on a long vacation!