Please can i use another Apple id on my iphone

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.

Have you read -> Related Article -> If you see a Could Not Create Apple ID or Could Not Set Up iCloud message ?

Do you want to add a second Apple ID to your iPhone or replace the existing Apple ID with another one?

You've created the maximum on that device, create a new one on a different device then sign in with that one on this phone.