Firestore Authentication Question

I’m trying to implement a basic form on a website using Firebase. The form is a simple first name, last name, email, message form. Upon submission, I just want the form to save the information to the database.

Do I need to have authentication enabled in order to do this? I can get it to work with the database in read/write “for everybody” mode but that isn’t suitable for production. When I try to implement the production database, it seems like they need to have an account.

I’ve tried the documentation and I don’t see anything in there, unless I am just missing it. Does anyone have any experience with this?