Yes, using second-person POV is okay to do in a argumentative essay if you are trying to make your peers feel as though they are there with you. This technique can sway some audiences to agree with you because they will feel included. However, if you are unsure how to use this in an essay, you should ask your instructor first.
I don't recommend using the first person pronoun in an argumentative essay. Unless your instructor suggests that you do so, omit it from the assignment because your writing will read better without it.
