install uv
install python version 3.11 (powershell/terminal: uv python install 3.11)
create virtual environment (uv venv --python 3.11)
activate the environment (windows: .venv\Scripts\activate mac: source .venv/bin/activate)
install libraries (uv pip install mediapipe opencv-python numpy python-osc)(mediapipe, opencv, numpy, python-osc)

test:
cd handtracker
python tracker.py

running each time:

windows:
.venv\Scripts\activate
cd handtracker
python tracker.py

macOs:
source .venv/bin/activate
cd handtracker
python tracker.py