Hi! Please, open Edge and sign in to your Outlook.com account. Once you are signed in, click the gear icon in the upper-right corner to open Settings, then go into Mail settings.
From there, open Rules and review the list carefully. Check whether there are any rules you did not create yourself, especially anything suspicious such as rules that forward all messages to an unknown address or move emails to Deleted Items. Delete any rule you do not recognize. After that, also review Forwarding and IMAP settings and confirm that no unknown email address has been added. If you see a forwarding address that is not yours, remove it immediately.