There are many ways to write argumentative essays, and what you mentioned is just one of the conventional ways.

Let me briefly explain your five concerns:

Being positive means stating your point of view in a positive way and speaking your point directly.

On the contrary, discuss your point of view from the opposite side. Better purpose.

Prove your point.

Deep, as the name implies, is to go deep into the topic, do in-depth analysis, and try to tell the problem.

The nature of

Prove an argument by connecting actual or objective facts.

Generally speaking, it is to sum up the above discussion, draw a conclusion and draw a full stop for the main body of the paper.