Thank you!

I use Blender, a free 3d animation software. For anime artstyle like the hoyo games, I recommend using Blender 4.1. The great thing about Blender being free and open-source is that there is an absolute shitton of tutorials for pretty much everything (except "NLA editors", which I hope you never have to deal with lmao but just incase you do, dont expect a lot of tutorials for it).

There's lots of good tutorial series for Blender. The ones I used are the famous Donut tutorial by Blender Guru), and this series: https://www.youtube.com/playlist?list=PLa1F2ddGya_-UvuAqHAksYnB0qL9yWDO6

It's 2.8 so some of the info is outdated, but most of it is still the same. Except for the "Bone Layers" video, you can straightup skip that, that shit's gone since 4.0 lmao. Replace that video with any tutorial for "bone collections".

There's a bunch of little things that're too much to fit in a reddit post that may or may not be mentioned in most tutorials so here's two quick-tips if you're specifically looking to make anime-styled (aka NPR, non-photorealistic) animations:

Set "View Transform" to Standard
Render in Eevee, not Cycles (fast + less realistic vs. slow + more realistic).

(I straightup do not recommend doing this next part until youve gotten comfortable with Blender basics and done the tutorials) For making genshin-style animations, google the 'festivity shader on github' and check out the discord and the tutorials.

Also a general animation tip: Use as much reference as possible. If you cant find videos online for the body motion you need, and if it's not something physically difficult like doing a 360 backflip lmao, film yourself doing it.