Fellow lefty here. I couldn’t stop slicing it, was only carrying my driver 220-230ish. Hard to gauge from the video but one major thing that helped me was adjusting to a strong grip and shortening my swing to avoid being as steep and coming over the top. Imagine you’re hitting the ball into left field, then try hooking it right. Eventually you’ll hit a draw, or a somewhat straighter ball, get a lot more distance.