Directors use different camera angles in order to engage the audience, make sure they know whats going on or to make you focus on something in particular. In order to do this, there are a range of angles they could use.
I have looked at Blank Space by Taylor Swift to show the different camera angles.
Extreme long shot
Used so the viewers can see everything in a room or at a place. Can demonstrate wealth (like this shot)
Two Shot
Two shots generally show intimacy between two characters or subjects.
Close Up
A close up makes the subject look bigger, more important and makes the audience focus on something in particular like facial expression.
Medium Close Up
Medium close ups normally make the viewer focus on something/someone or it can withhold information.
Ariel Shot
This shot gives an overview of whats going on. It can make the subjects in it look small, worthless and unwanted.
Low angle
A low angle shot makes the characters look important or superior. It can also put the audience in an inferior position.
Over-The-Shoulder Shot
This can help the viewers to see what another character is seeing or become part of the action/conversation/narrative
Looking at the camera angles in this music video has helped me to understand conventions of music videos and also it has helped me to get an understanding of which camera angles are best in which situations to correspond with the emotion of the narrative.