Straight back position in layer animator

I currently have 2 layers in the animator, 0 - legs and it consists of an animation tree, 1 - this is the body and arms and so the stand is saved, the body has a weight of 1, I also tried to align it with the script

anim.SetLookAtWeight(1f, 1f, 1f);
anim.SetLookAtPosition(target.position);

but my back moves to the sides because the full animation is taken with tilts, that’s what happens


How to do this action normally?

or tell me where there is a library of standard animations, with all directions of movements and without anything, there are not enough of these on mixamo…