Ahhh right I get you.
I have some very very limited experience with animations, though it was a VERY basic process of simply linking groups of poses. Using a preset, indigenous proprietary 'skeleton' of the in 'game' character models (it was an open Sandbox deal like Blue Mars more than a 'Game").... and yeah, even that was hectic, basically digital claymation. The more realism, and flow, the more smooth, you want it... the more complex it got, because one animation was 'frame', if you will, limited to about 10 poses.... but there was batching for those, so you could batch up to 20 groups of ten, linked to play one after the other. But that mean the last pose of your first group, has to be a 'natural/neutral stance' and the first pose of the last the same, and the first and last of all the poses in all the groups in between the same, or it looked janky. That worked for sitting at tea... but riding a motorcycle, for example... it looked very strange. You wound always having to chose between smooth and realistic, or what actually looked right for the purpose.... because often you could not have both. It was a VERY VERY long process.
Had a little experience in the same game using basic in world meshing tools, and little blender, doing some 3D modelling, and associated texturing/rendering and yeah, I know all about taking hours to make something, then have to scrap it at the 11th hour... well, in most cases, not scrap, but just return the objects to a default state and start 'sculpting' again because there was way too many changes from base to where I had gotten up to, to even revert via undo tools. I am bit of a perfectionist though.
Me personally, I would love to make a Ren-Py game, but has NO IDEA how to, and I KNOW NOTHING, about language. Tried to learn a little coding once many years ago, but just was not for me, did not interest me, and even the most basic, was beyond my understanding. Doubt my current PC even has the power to do what needs doing, so I can dream, and I do, but I am certainly complaining.... just wishing ;)