dnull from the forum helped me so for the future generations:
we open the foulder sources.list.d with the command :
sudo nano /etc/apt/sources.list.d/wine.list
we type in or copy paste: deb Index of /wine-builds/debian stretch main
ctrl+x to exit Y to save
sudo apt-get update sudo apt-get install wine
You can use apt search to search for a specific package name if you didn’t get it exactly right.
For example, in your usecase, you can look for packages with “wine” in the name by running sudo apt search wine. This helps when you don’t know the exact name of the package.