Quick Steps Below (Details with pictures and steps are attached if needed)
Web Browser (Microsoft Edge, Mozilla Firefox, or Google Chrome Apple Safari (version 16 or higher))
https://www.office.com/ (Microsoft Office landing page) where you will find a “Sign in” link at the top right of the page.
Mobile Device (Outlook APP for ios Android)
1) Download the Outlook app.
2) Once you download the app from the Apple app store or Play Store (It's Free) then use this directions.
Android
Mobile Device using native mail client
3) iOS Mail app (Set up a Microsoft 365, Exchange, or Outlook email)
https://support.microsoft.com/en-us/office/set-up-an-outlook-account-on-the-ios-mail-app-7e5b180f-bc8f-45cc-8da1-5cefc1e633d1
4) Android Mail email app (Set up email in Native Mail)
https://support.microsoft.com/en-us/office/set-up-email-in-android-email-app-71147974-7aca-491b-978a-ab15e360434c
3rd party application issues with installation, access, updates, serials, licenses.