How to track my iPhone using IMEI number

You cannot. IMEI tracking is only used by law enforcement agencies in emergencies.

Read this support article to learn what you can do if Find My iPhone or Find My iPad isn't enabled on your missing device --> If your iPhone or iPad is lost or stolen - Apple Support

Hello~ You cannot. Click on below….

If your iPhone or iPad is lost or stolen - Apple Support

~Katana-San~

Your carrier can track the phone using the IMEI, but they will only do this in cases of missing persons or similar emergencies.

Even then, your carrier will require a court order to begin the process.