I lost my iPhone

the only thing you can do is listed here

If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

maybe apart from looking the old fashion way

Hi azza39,

Apple has a checklist of steps you can take for a lost iPhone here: If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

Retrace your steps and look for it the old fashioned way.

If you can’t find it, buy a new phone.