@Anthony_CarlTwo things to consider here. You are likely receiving emails on your personal account because that email is stored in your O365 profile. You could contact your tenant administrator to see if they can remove that address or edit your O365 profile yourself to remove the email, if you have permission to do so.
Second, you can turn off email notifications for Teams. Click on your profile pic/initials in the top right of Teams>Settings>Notifications. Under 'Email' change the 'Missed activity emails' to 'Off'. This should stop you from receiving the email notifications in the first place.
