Sending, receiving, and organizing email in Outlook.com
Hi,
I will help you with this. I will walk through a few steps with you. Some of these are just to help figure out what is wrong, not to fix it right away. So if nothing changes after a step, that is normal. I will keep going until we solve it
- Do you mean you are not recieving some emails?
- If you have another account, could you email this one and let me know if you receive any bounce-back messages?
https://support.microsoft.com/en-us/outlook/mail/focused-inbox-for-outlook
- From your inbox, select the Focused or Other tab, and then right-click the message you want to move.
- If you're moving a single message from Focused to Other, select Move > Move to Other inbox. Select Always move to Other inbox if you want all future messages from the sender to be delivered to the Other tab.
If you're moving a single message from Other to Focused, select Move > Move to Focused inbox. Select Always move to Focused inbox if you want all future messages from the sender to be delivered to the Focused tab. 
Also, check for any rules.
- Sign in to your Outlook.com account.
- Click the Settings (gear) icon in the upper-right corner.
- Select Mail > Rules. If you don't see it immediately, click View all Outlook settings first, then go to Mail > Rules.
I look forward to hearing from you to get the results of the troubleshooting.