My iPhone recognizes my brother’s face

"My iPhone recognizes my brother’s face: Hello, my iPhone 15 pro recognizes my brother's face. He and I are not alike, but when he opens my phone, my Face ID recognizes him. I heard that there is even some kind of compensation for this. I can provide all the evidence."

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Rid of All Alternate Appearances:

1. Go Here: If Face ID isn't Working on your iPhone or iPad Pro - Apple Support
2. Scroll to: Add an alternate appearance 
3. As ir Rads: For most users, Face ID will continuously learn as they change. If you have an appearance that can look vastly different, you can set up an alternate appearance so Face ID still recognizes you.