Outlook.live.com inbox not working and sending messages is working fine

what to do if no messages arrive on outlook.live.com? I don't have any Microsoft 365 package, is it necessary to receive messages in the web version? I can send messages and it works fine, but receiving messages does not. the email address is from an external server. In outlook.live.com it is not possible to set POP and IMAP for an external mailbox. what should I do? These are the only POP and IMAP settings visible in the screenshot