How to set up a redirect in Apache?

Question

Apache HTTP Server

Hello!
How to make sure that when entering www.mysite.com/auth (where mysite is the domain of the site), users are redirected depending on the account (for example, user Ivan - www.mysite.com/ivan , user Petr - www.mysite.com/petr ) and at the same time, if you physically go to these addresses, they will request authentication and only Ivan can log in to /ivan, only Petr to /petr. Apache web server. How to implement this?!
Help me please!
Thanks in advance for your replies!!!