Responsible in the sense of the privacy policy act, notably the EU-General Data Protection Regulation (GDPR), is:
John Doe
123 Example lane
12345 Exampleville
+49 (0)1234 56789
+49 (0)1234 98765
john.doe@example.com
Inside the EU, you also need a privacy policy satisfactory for the General Data Protection Regulation (GDPR).
Since I'm no lawyer and don't know what you will add to your site, I'm not providing any.
But here's some information, you will need, when creating your own: