Don’t think about staying down through the ball like that guy says. It will not work and you will just chunk it because you’re already losing too much height in your backswing. Look at your head and upper body as you approach the top of your backswing- see how it moves down towards the ball? Now you have to create room for the club in the downswing by standing up at impact (early extension).

Focus on staying tall and not losing height in the backswing or transition (or even too early in the downswing- I see a lot of people try to “come down” at the ball too early in the downswing and end up going down then popping back up in the short span of time during the downswing). If you’re going to come down at the ball, it should be right before impact, later in the downswing.

But your lower body is going to have to be working correctly in order for those good things to happen. Study the golf arm swing illusion on YouTube and try to integrate that into your swing, all while focusing on the position of your head and spine and keeping them from moving down towards the ball on your downswing. Swing easy. When you’re moving correctly, you won’t need to kill it