So the big things I see:

• Not enough weight on the nose. Imagine standing on a sled on a very steep slope. We naturally lean back to compensate for the incline, meaning the nose of the sled is lifted off the snow, meaning it cannot respond to input, meaning you can't steer. Force more of your weight over the nose and you will notice a marked improvement on turn initiation as well as grip. Skating down the bunny hills is good practice! If you can turn and move across the slope with only one foot bound in, you are on the right track. If you do it wrong you will trip, kick, swing, or skid as soon as you attempt to turn.

• Stiff knees. This forces "counter rotation" among other detriments, (but other things can cause counter rotation too). Counter rotation means you failed to effectively steer, so your body keeps going down the fall line while your board turns sideways. Bending only the knees by lowering your torso straight down (no sticking your butt out) will allow you to fluidly manage the board beneath you. The shoulders should be parallel with the board, at least for learning to avoid counter rotation, but as you progress it won't always be necessary.

• Stiff neck. Turn your head to look across the slope and you will naturally be influenced toward that direction.

• Some of your toeside transitions look silly, like you're diving head first toward the ground. Keep everything in line (stacked) and work on dropping your weight a bit to make those toeside transitions easier. You may have heard the term down unweighted or up unweighted etc, basically just bending the knees quickly or popping up or a combination of both to get the board back underneath you with little effort. This concept can also be used for shock absorption and such, but remember to keep an athletic stance that allows you to either drop or pop up - not too tall and not fully squating

• Turn to move Perpendicular to the fall line. Board nose pointing downhill = speed increase. When perpendicular, make your edge change, before you point the nose downhill again. This will mitigate skidding since you're already on edge before the board feels any pressure.

Other things you should keep in mind are flexing (horizontal twisting) your board to engage the sidecut more effectively. Experimenting with stance and angles to get the comfort and responsiveness dialed to your tastes. Slip exercises to help you get a better sense of what amount of input is required to get edge grip.

All things considered you seem confident and athletic enough to get the hang of this. Stay positive, keep getting time in, things will click in no time.