I don't like commenting on these as my technique is attrotious. But even if I can't play properly hopefully I can see something in a video to help.
The bowling machine, seems to be on the usual half volley length but with occasional swing and different lines.
Despite this your front foot movement is identical for every ball, it moves forward and across slightly.
It means your stretching to the wide balls, and end up plum to a few on middle and leg that swing.
So I'm gonna guess the foot movement is pre meditated, expecting the pitched up ball.
I find this hard not to do to a bowling machine, hence preferring proper bowlers(machines are good for practicing certain shots over and over again mind.
What h buzzes video, watch the ball, move your head towards it and let you body and foot follow, this should give a bigger stride and also a stride toward the ball, whatever length it is.
as for the 80mph bouncer net, do you face 80 mph bouncers on very bouncy tracks? If not it's really not worth doing this practice, use the time to work on something neeeded.