How did someone have access (read + delete) to my messages on my phone?

This is a cross post since I am lost and would like any type of assistance here:

Long story short, someone was able to access the 2FA code on my Samsung S20 (via Google Messages) and used that to get into my Outlook email..

Now that is the confusing part. I'm not sure how, but he managed to retrieve the access code sent to my phone AND delete the message. The message went to Trash, but if he went the …

2fa access assistance code delete email google google messages lost messages outlook phone privacy s20 samsung story