Ik haven't tried the wave pool. Any waves pool. But I think all that volume might actually work against you at some point. Judging from your takeoff I don't think you actually need it. Although positioning is considerable harder in the washing machine we call the North Sea.

If you'd like to try something smaller you can try one of my boards sometime. (Sea, not pool, that concrete scares me too haha)

Your head's not actually too upright. That's more of a thing to focus on when you hit a tighter corner to practice too turns/snaps. This bowl is more flow oriented. Malieveld is where I practice my top turns.

You're using considerable force in tour turns. Go a bit more mellow and it would get less jerky.

Sounds like an absolute steal

I can't get video to work in a reply either but I can definitely post your videos in a post. (I can download them from your Google Drive links)

Use the first button from the left when choosing attachments. I know. It's deceptive.

One thing to consider is to simply wait a whole lot longer before turning to paddle. (You could easily get into this wave with just one or max two stokes). That would give you more time to read the wave. Which would help your positioning and hence also your speed generation.

This wave is pretty much perfect and it doesn't break so quickly so you het away with it. But if this was a short beach break you can easily paddle yourself out of position this way so it's good to build the right habit early.