I got locked out my own phone and people don’t believe that it’s my phone

The iPhone has activation lock over it , reset the Apple ID password How to remove Activation Lock - Apple Support

You can also contact apple support see the complete steps in the article If you need help removing Activation Lock and have proof of purchase documentation, you can start an Activation Lock support request.

You'll need to enter your iCloud password to unlock the device. Forgot? visit iforgot.apple.com