Are you truly sure that i open my phone because i forgot my apple id when i make new apple id?
i Forgot my apple id and i have a new account now .can i open my new account right now to open my apple phone?
You need to sign out of the old ID before you can sign in with the new ID.
See if you can recover the ID/password.
Apple ID - How to find your Apple An iCloud e-mail address is an Apple ID.
Enter the Apple (iCloud) ID and click Forgot Password.