i need to turn off find my iphone

see this support article

Turn off Find My on your iPhone, iPad, or iPod touch - Apple Support

there is a section that says 'if you no longer have access to your iPhone'

The blue text in the post above from Chris 0107 is called a link. Links are ways to open new pages with additional information. You should move your cursor anywhere in the blue text and click to read the answer to your question.