Not sure on this because I have never surfed one of these set ups!
Early waves look to have little push and maybe you took some time adjusting!
One thing that appears throughout all your waves is the same static foot positions and crouch it works for a soft lean bottom turn but failing the earlier top turns as the leaning un balances you backwards to wipe out.
The wave look hard to gain turning speed but maybe they changed the setting a little as the session went on you improved and were making the top turns and back to bottom turns.
There is some value in being able to stand up and compress for putting more power into drive through the hips and low back extension.just rotating the upper torso looks like you are doing something but doesn‘t translate into turning the board.
You show some weighting and unweighting between front and back foot great makes a difference being able to force some power into that weight shift directionally to enhance a turn would add stability rather than leaning alone.
With less powerful waves just a little more front foot pressure will increase speed but being able to shift back quickly and power the back foot and add body torque through that foot is a big answer.
Watch your videos see if what I am saying fits!

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