Here are some interesting links:
- https://fr.freepik.com/search?format=search&img=1&last_filter=img&last_value=1&query=body+flat+for+animation
- The AE add-on for character animation https://rxlaboratory.org/duik-angela-download/
- Link tuto for duik https://www.schoolofmotion.com/blog/character-animation-in-after-effects