If you create/use a new Apple ID, you will lose access to some of your data and the purchases made with your existing Apple ID. You might want to explain what problems you are having with your current ID to see if someone can make suggestions that will fix your current ID problems.
Apple ID - create a new.
Apple ID – Create
Apple ID - Could Not Create or Could Not Set Up iCloud message.
All purchases made using an Apple ID are tied to the ID. Delete the ID and you will need to download them using your new ID. There have been posts by people who have contacted Apple Support and they were told that if you delete an ID associated with an email address, you can never reuse the email address for an Apple ID. Make sure you sign out from the places in the 4th link before deleting the ID.
How to delete your Apple ID account.
Apple ID – How to Delete.
Delete Apple ID (new).
What to do after you change your Apple ID or password - Apple Support