Hello, and welcome to Apple Support Communities rcarme,
We can see you have a question about reducing the amount of junk emails you're receiving in your Inbox.
Let's see if the information in this guide helps: Identify and filter junk mail in iCloud. This shows you how to begin to use the
"Report junk mail" feature in the Mail app and provides really understanding to help reduce the amount of junk email you're receiving. If this is with another email account, you can check with the provider to see if they offer suggestions or filters to use.
Take care.