looking for either 3d or 2d animation books that teaches this two thing that is how motion move in balance or as most people say "in tandem", where weight changes and not feel limped where right and left is different basically ways to time and space things in precise centimeters or milimeters

and then second one is "not floaty" where stuff shows weight and goes up and down but basically knowing how much and how many exactly depending on the character design

and then third one is how pelvis or chest or abdomens "rotates" in walks or gaits like giving proper orientation but this feels more like "follwo through" motion

but in general its about getting walks, runs, trots, gaits or any loop cycles right, and not limp or out of balance when not demanded, and not floaty to avoid unrealism. so to make this simple its either a book,. or a schematic, a single page leaflet on how do i dynamically deal with all these issues in loop or or non looping animations