How can I remove third-party access and secure my iPhone 13?

"Someone hacked my phone: Yes, my bank account was compromised and they change my password in my bank account so I don’t wanna have no third parties. I just want my iPhone 13. I don’t want no cross devices cross phones in my phone."

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Hacked Bank Account:

I. Securing your iPhone:

A. About a Hacked iPhone:

It was your bank account that was hacked; not your iPhone. The only way for an iPhone to be hacked is if it were jailbroken. So, if purchased directly from Apple, then no worries there. Unfortunately, there is no way to determine if it has been hacked, unless you know that it has been jailbroken. And, the only way for an iPhone to have hacked is if it has been jailbroken.

So, what to do...

B. Reset your iPhone to Factory Settings:

Having tampered with this app, then reset you iPhone to factory settings, as if you were to sell it. Go here: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support. Perform as instructed there, including the backup creation and iCloud logout.

II. Securing your Accounts:

A. Verify your Devices:

Verify that all device are logged in to your account, by using this link: Check your Apple ID Device List to See where you're Signed in - Apple Support

B. Modify your Credentials:

Having been stollen, someone lily has your credentials. So, by all means, modifying them.

• Modify: your login credentials (Using Both a New eMail and a New Password for each and all sites)
• Associate: a different method of payment to your account
• Enable: Two-Factor Authentication for Apple ID and for all other accounts that have such an applicable option

C. Contact Apple Support:

If you think your Apple Account has been hacked, perform the above, and contact Apple Support, ASAP. They'll run you through the fix.

Apple Contact Us Info:

• Contact Us - Choose Locations
• Proceed from there, as necessary