How to resolve 'iPhone unavailable' issue?

The phone is unavailable because the passcode was entered incorrectly 10 times.....or more likely.....forgotten. Here's how to get things going again, assuming that you have an up to date backup of the phone.

If you forgot your iPhone passcode or your iPhone is disabled - Apple Support

Follow the instructions in this guide published by Apple 👉 If you see a iPhone unavailable message or Security Lockout screen. This guide contains the procedure that will help you to reset your passcode.

Axel F.

put your iCloud on another device and erase the phone then sign into iCloud on the erased phone

Who is he? Why can't you "get into" your phone?

In short, there isn't enough information here for anyone to even guess.

"He" is likely the message that is appearing on the phone.

“He” might be the iPhone idk