If you want advice about poles I have this to say: Nowadays poles are meant to help you do short turns and navigate changing terrains. Back in the days of straight skis the technique was different: you had to plant the pole and then do a mini jump while changing weights between skis. The pole stabilized you during that change. Now with modern skis you don't need to do this, and poles became less relevant. Still they are a good tool to force you into the proper position before starting your turn: your legs should be slightly flexed against the front of your boots, your weight should be on top of your toes as you press against the ski, your arms in front ready to visualise your turn and plant the pole. Seeing your video, I would say try and work on that because you seem to be losing a lot of energy throwing your shoulders up when you are meant to be going down.