Using Outlook for Android for personal email and calendar management
Hello, thank you for reaching out to Microsoft Q&A.
Did you check your Junk or SPAM email folders to see if those emails were accidentally moved there? Open any incognito tab and sign in with your Hotmail account here - https://outlook.live.com/
Check your Junk email folder to see if those emails ended up there.
If you can't find the emails there, next check your Deleted Items folder and recover them. You can also look in the 'Recover items deleted in this folder' to restore your emails.
Reference
Email is missing from your Outlook.com inbox
Let me know if you still need more help.