Unable to receive emails from 3 senders

Hello! Hope you can help. I have not been receiving emails on my gmail account from 3 senders. These emails are not ending up in my spam or junk files. I have no idea what to do. This has been going on for months. Hope you can help. I can share the email addresses of the senders if you eed these.

Thank you so much for your help!

This is a re-post of a comment on How to Prevent Emails from Landing in Gmail's Spam Folder