To achieve this, we need to login to our G Suite admin console, watch the video to see 3 possible ways to access admin console.
https://www.goldyarora.com/how-you-can-access-your-users-email-without-knowing-their-password-in-google-apps/
origin - https://www.pipiscrew.com/2020/04/your-employer-can-access-your-emails-in-google-apps-without-password/ your-employer-can-access-your-emails-in-google-apps-without-password