My new I’d not allowed this iPhone

A message saying, "The maximum number of free accounts have been activated on this iPhone" or, "This iPhone has been used to create/setup too many new Apple IDs" is discussed in the support document: If you see a Could Not Create Apple ID or Could Not Set Up iCloud message - Apple Support :

- A "Could Not Create an Apple ID" message means that you have exceeded the number of new Apple IDs you can set up with iCloud on a single device in one year.

- A "Could Not Set Up iCloud" message means you have created Apple Accounts on certain platforms that need to be set up in iCloud too, but you have reached an annual per-device limit for doing this.

See the recommendations in the link for alternative methods to set up iCloud accounts, e.g., on a computer, or by contacting Apple Support:

Click here --> Choose your country or region - Official Apple Support Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.

or:

Contact Apple for support and service --> "See a list of Apple phone numbers around the world."

Click here --> Contact Apple for support and service - Apple Support

I am not sure that creating a new ID on the web will necessarily solve your issue because you may then just encounter the second message. I would follow the advice Apple provides in the document.

Try and create a new Apple ID on another place, on the web for example

Create an Apple ID on the web

1. Go to appleid.apple.com and click Create Your Apple ID.
2. Follow the onscreen steps to provide an email address, create a strong password, and set your device region. The email address that you provide will be your new Apple ID.*
3. Enter a phone number that you can always access.
4. Check the boxes to subscribe to Apple Updates if you'd like. This keeps you up to date on the latest news, software, products, and services from Apple.
5. Click Continue.
6. Follow the onscreen steps to verify your email address and phone number.