All models run on your own hardware..... or not?

I am guided by ==> Models: Fine-tuned - Roboflow Inference

I wrote:

import os
os.environ[“ROBOFLOW_API_KEY”] = “my roboflow API key”

but when executing:
model = get_model(model_id=“my model id”)
i get:
inference.core.exceptions.RoboflowAPINotAuthorizedError: Unauthorized access to roboflow API - check API key. Visit Authentication | Roboflow Docs to learn how to retrieve one.

What’s wrong?

Can somehow help me? Please )