I want to track my iPhone with IMEI

You don't, sorry.

That number can be used just to report your lost/stolen device to your carrier and/or to the police station.

See these instructions:--> If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support, and/or:--> Use the Find My app to locate a missing device or item - Apple Support

Regards

Giulio

the only way to track your phone is using Find My

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