how can I do if my stolen iphone wasnt actived yeat?

If you are saying that you never turned on Find My?

You will not be able to locate your device without Find My being turned on. report the theft to your local authorities

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

It was activated the first time you put in a sim and used it.

The only thing you can do is to report it to your carrier and the police.