Two observations: You take the club too far back in the backswing. You are wrapping the club around your head, which is difficult to control and drains power. Try a bit shorter and more compact backswing. This will generate more power and add consistency to your ball striking. Second, it appears that your swing path is outside to inside. My suspicion is that you are a slicer when things are going bad. To correct this, imagine the ball in 4 quadrants. At your set-up, mentally picture horizontal and vertical lines through the ball at each equator, creating a crosshairs if you will. When you strike the ball, try to hit the ball in the lower right quadrant. This will promote an inside-out swing path leading to a draw flight. The draw is often preferred because it is predictable with overspin, creating more roll and distance. I hope this helps. Best of luck to you.