You generally need both CBPC (for collision-based "jiggle") and FSMP (Faster HDT-SMP) for more complex, fluid movement.
Download and install CBBE 3BA (3BBB) via your mod manager ( Vortex or Mod Organizer 2 ). The BodySlide Workflow: "Building" Your Body Skyrim mods tutorial - how to use 3BBB
Install XP32 Maximum Skeleton Extended (XPMSSE) . This provides the necessary "bones" for the physics to attach to. You generally need both CBPC (for collision-based "jiggle")