Welcome to the community!
You should be able to do this with Anonymous Access: https://support.atlassian.com/confluence-cloud/docs/set-up-public-access/
May I ask what you are trying to accomplish with Confluence? Who are the end users? Is any of the information security sensitive?
Anonymous access is the way to go there. However, anyone you grant access to have the ability to create content in those pages should be trained on restrictions and verifying they are adding content to the correct space. Confluence has alot of permissions: https://confluence.atlassian.com/doc/assign-space-permissions-139460.html#:~:text=If%20you%20are%20the%20administrator,basis%2C%20or%20using%20Confluence%20Groups.&text=Go%20to%20the%20space%20and,Choose%20Edit%20Permissions.
In addition if people go to create a page using shortcuts etc depending where they are, it may create the page in an undesired place. Thus temporarily making content that shouldn't be seen available (or well until it's caught).
Hope this makes sense!
Oh side note I forgot to mention. Whenever you create a post in the community, if your instances are tied to the account you are messaging from, it shares those details (like free versus paid etc)!
Hi Community! We're thrilled to share that Team Calendars for Confluence is now a built-in feature for Confluence Data Center releases 7.11 and beyond. A long time favorite, Team Cale...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events