epraise for Parents
Microsoft tries to be helpful and will log you in with previously entered credentials, saving you having to enter them every time. This is a problem when sharing a PC, as you can get logged in as the previous user rather than yourself.
There are a number of solutions:
1. Have separate PC accounts for each person who uses the computer( best option)
2. Set up profiles in the browser. Each Profile is independent and allows separate logins. How to do this depends on the browser, but this guide will help for common browsers: How to Use Browser Profiles in Chrome, Firefox, and Edge | WIRED.
3. Use Incognito (InPrivate on some browsers) mode: How to go incognito in Chrome, Edge, Firefox, and Safari | Computerworld