Can you help me lost my iPhone

We cannot help. But perhaps you can help yourself.

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

Click here for information; in addition, post notices around where you lost it, and if applicable, contact the Lost & Found department of the facility where you lost it.

(218878)

Then it’s gone … unless you happen to spot it using your eyes or hear it ring when you call it on a phone.