Your crosspicking doesn’t look totally wrong to me.
Here’s a few thoughts :
1/ I think you dig kind of too much on every single string, like you articulate, or “zigzag” the strokes too much, instead of a more swing pick trajectory. Try to achieve a broader swing, with the pick traveling farer on both sides of the stroke. Also the more neutral your pickslant is to start with and the best it is I think. What you do NOT want to do is to alternate (in a sense of rotating) pickslant at each string change. This is no 2WPS stuff.
2/ your motion itself I don’t know… It looks to me a bit busy, like a bit of wrist, a bit of arm etc… But I can’t say for sure.
No coming to my own experience with crosspicking…
Crosspicking is more intuitive (and to me kind of easier) on acoustic guitar for a couple reasons. First is muting, which I tend to do a lot on electric, at least a little. Muting doesn’t go that well with crosspicking 1 nps stuffs. It can be done, but it makes things trickier so it’s better to avoid that until you’re comfortable with the motion. Start with a more open, unmuted sound and acoustic guitar naturally fits more to that.
Also broader, stronger strokes are good on acoustic. I tend to pick way lighter on the electric and this might be counterproductive for working out crosspicking patterns. You need to look for more volume. There’s also the string resistance thing.
The motion itself is more of a swing as I said. For me it’s a bit like using a eraser, with the wrist as pivot. When you push that motion across multiple strings it feels almost like strumming (but note that I tend to strum with the wrist, so that comparison may be irrelevant depending on your strumming motion)
The fwd/bwd roll on 3 strings probably is the best drill for crosspicking. BTW the Bluegrass idea of ‘crosspicking’ comes from that very pattern. It forces you to all string change permutations in a very simple way - as opposed to the back and forth pattern on 3 or 4 strings. If you do the latter alternate the first stroke up vs down.
Also avoid micromanaging single pickstrokes. I really had a hard time with skipping inside change on the roll, and the more I would focus on it, the more it made me crazy
