Locate lost phone

Use any internet browser and log into www.icloud.com/find

Also see the following Apple articles for information about lost or stolen iPhones or iPads: If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support and

Use the Find My app to locate a missing device or item - Apple Support

Or… If it’s lost somewhere in the same building, and is charged, call out “Hey Siri, find my iPhone”