Changing or merging Apple IDs

You just need to create a new email and you can change your Apple ID to this new email address.

Change your Apple ID - Apple Support

There are many places to get an email address if you do not have one. I would start with your internet provider if you plan on using that service for the long term.

You will want your ID attached to an existing email. Creating a new Apple ID is the only way you would lose access to your Apps. Changing your existing ID to a new email address will still allow access to all of your Apple information.

You will still retain access to your Apps and purchases by following the link provided. As the first line in the support article states: "If you no longer use the email address that's associated with your Apple ID, you can change it. You won’t lose access to your contacts, purchases, or other account information."

This is the procedure to use when you no longer have the email address that you used for your Apple ID name.

No problem. All should be well after that. The article does not state if you need to sign out of your Apple ID and sign in with your new one after you get it changed, but that is something you may need to do. I'm not sure if the ID automatically get updated on your phone, but you should be able to verify that.