Here is my ARMS Warrior WoW Shadowlands 9.0.2 PVP Guide for LOW RATED Players . This guide covers the patch 9.0.2 and is targetted for low rated players.
ARMS Warrior is an obvious S Tier spec, and is very good for any person that is looking for a main melee spec for pvp.
You have 3 VERY good covenants with an upcoming new one, Necrolord, for patch 9.0.5.
There are plenty of Glad - R1 Guides out there, but in my opinion, it helps to have guides from different point of views.
This Arms Warrior Guide is not COMPLETE but a complete version will follow shortly ( with Gear, Stat prio, Arena matches with examples. ).
Video : https://www.youtube.com/watch?v=VW-45iF0qYc&ab_channel=ThoGrey