Realistic Unity VR Animations Creation

I'm looking for an expert animator to enhance or create a few realistic animations for a Unity-based virtual reality platform. This is for a research study, so the quality and realism of the animations are crucial. I already have the rigged human models (from renderperople).

Specific animations needed (at least the first two; more depending on cost):
- Drinking a soda
- Smoking a cigarette
- Sitting and talking
- Walking

All animations need to be tailored for an adult demographic and should be highly realistic, not cartoonish or semi-realistic.

Ideal Skills:
- Expertise in Unity and VR animation
- Strong understanding of realistic human movement
- Experience with creating animations for adult demographic
- Ability to create high-quality, detailed animations