Windows 10 updates also download "Windows Insider"(WI) up dates without leaving any traces of W I fi

Windows Insider is a voluntary option. no one is ever forced to enroll in that program. lots of people like to try the new features of the Windows Insider, others like developers or system manufacturers can test new technologies with it. there also a huge number of people who just Love using Windows insider and make their OS better.
please go to your Windows settings, updates and in the Windows insider program section, make sure your account is not participating in any of them.
hope that helps