I'd add that you could really benefit from some coaching or schooling on body position and setting up for the turns etc.
You need to be set up (off the bike already) before hard braking and turn in. As well you're moving as you exit. All of this unsettles the bike and also makes it hard to be consistent.
You only really need to get back on the seat to tuck for long straights.

p.S nice vid Nelso