I want to change my Apple ID only
I want to know if I currently sharing an ID but want to only change mine how will I do it and also changing ID’s does it delete your current apps
iPhone 6, iOS 12
Follow the steps in this article to change the email address for your Apple ID:
Change your Apple ID - Apple Support
There are a few additional steps to do after that:
What to do after you change your Apple ID email address or password - Apple Support