After deleting cookies from Safari Preferences, some keep returning. How do I delete them?

Hi TJK. This is unclear. They reappear the same instant that they are deleted, and no pages are open, just Safari in a private window. They are from known companies, like nbc og IKEA and more respected companies. Even so, there must be files saved on my computer, or?

Hi,

After deleting cookies, open Safari, go to Safari menu > Preferences > Privacy > Cookies and website data > Always block.

They keep returning, now I am in a private browser. Most are from respected companies like IKEA or nbc. But I would like them to not come back. Did you solve your problem?

Doesn't work. at all, they return every time

Go to your home folder > Library > Safari > Databases > delete the ones in question. If that doesn't work, delete everything inside the Databases folder.