How do I locate my lost phone

Hello ~Take a look here:

Use the Find My app to locate a missing device or item - Apple ...

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

~Katana-San~

These are the steps you can perform in such a situation:--> If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

Regards

Giulio

So I wanna know if I can find my lost iPhone without location on.

Sorry no, not if you didn't enable the "Find My" app, as per the all support articles posted in this thread.

Regards

Giulio