Hi @L.Tuu and welcome to the forums! 
Ragdoll is lifelike by default. As in, all of the forces and masses and contacts are modelled realistically unless you tune it otherwise.
For example: The fall - Ragdoll Blender - #9 by Manikandan_Rajendran
Have you gotten results that does not live up to the level of realism you are after? If so please do share here and we can try and work you through it.
For more examples have a look at our YouTube and LinkedIn pages.