Realistic walking crowds

Hi
Am searching for a 3rd party asset for creating crowds of walking people. Roughly 10 - 50 people is what I need. So far all I have found is Unity Asset Store - The Best Assets for Game Making
but not convinced the accuracy of the people will be good enough for my simulation. Does anyone have any other better recommendations?

Autodesk has an awesome crowd system built into 3D Max. I can’t remember when it came out - 2015-2017 but I played with it recently and it’s so simple - it just works.
If it was needed for real-time interaction for moving through the crowd like ass creed or some other live crowd - not sure how to go about that - but it’s an alternative to above.