You arent popping up, you are standing up
What I mean is that you bring your back foot up, and then your front foot sort of wanders along as an afterthought. Your hips are out of alignment. You arent lifting your hips and pulling your legs through explosively. You are taking a step with your back foot but you dont turn your hips, so your front leg cant get through
The pop is explosive. Its not 3 or 5 moves, its pretty much one move where everything happens. It seems impossible when you start, but i guarantee once it clicks you will rarely think about your pop up again.
These are from your 3rd video but its consistent with the others
to start, you step off your back foot, your front foot is way behind. This could be ok although slow (google 'aussie sprinter' pop up). Its not ideal, only works on longboards (where you have board to step off). You 'should' (in the classic pop up) have a strong arm push (with your arms further back towards your hips), your hips come up and your legs both swing through more or less at the same time. However, the aussie sprinter method is ok.

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However, then your hands are still down and your hips are still square to the board. think about the body position - its impossible to get your front foot to be in line with your back foot if your hips are square (try it at home - you just cant do it and retain any sort of balance). This is where your pop up starts to break down - your hips need to be turning, need to be side on. Also your weight is a bit all over the place - half on your hands and half on your back foot; its not a great position to create stability when you have to stand up

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now your hips are still pretty square on, your front foot just lands over to the side because it just cant go anywhere else. Your hips arent aligned and, in fact, your arms is still in the way of your foot. Your hands are still down, you should have your front foot planted and eyes up and hands up by now

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Basically you need to move faster, explode more and twist those hips!