The "Advanced React" website itself does not collect or store any private personal information.
It physically can't, it's a static website, just a collection of HTML pages. It doesn't have any backend to connect to or store anything, even if it wanted to. It doesn't show ads, and doesn't store any information in cookies either.
It does, however, use a few third-party services that store some of the information. All the services are used only for the purpose of improving readers' experience on the website.
If there is a need to get in touch, here is the email: email@example.com