Looks like this animation is more complex than I thought. It showed a new side of where I lack skill and highlighted the problems the new model has.
After roughly 16 iterations (it's not a joke), I finally got something decent-looking and can finally begin working on the last bits of the animation. I'll try to squeeze all the juice from UE5 and see how it looks when effects and lighting are properly done.
Can't really say anything more, wait for the release of this animation.